It sounds like you've got a really good grip on things, and you're on the right course. I would give some caution re the divorce - before my ex and I separated we had agreed to how things would go and costs etc, but after we separated and met to discuss things changed. I think we did reach a fair figure in the end (although it was 4x what she originally agreed) - but in our last meeting she did start trying to go for a lot more - upwards of 12x what we originally agreed. I had in the meantime done my sums on what I felt my assets were, and stuck to my figure of half of that. It was a bit contentious, but she agreed to my figure in the end. 

My and ex and I were both terrified of what our lives would look like without the other. I can't speak for her, but for me I've found a lot more happiness in my own company, and with others. I am also quite an introverted kinda guy, and I was able to hide myself away in the marriage. When it ended, I forced myself out into the world - I did this simply by accepting every invitation I had from friends, family and acquaintances which flooded in when the split was made 'official' (i.e. posted it on Facebook). I went out to dinner with people I work with, used to work with, old school friends - I went to visit friends and family around the country and abroad. For the first 3 months I didn't really stop moving - I was out almost every night. I took charge of my schedule and calendar, and when people made a suggestion that we meet up, I had my phone out immediately and pinned them to a date. I still do this now (although perhaps not as forcefully!) and it keeps me delightfully busy. 

I didn't go out specifically to meet new people, I met them through strengthening my existing friendships. There's no one in my life now I didn't know (or know of) a year ago, instead they're just bigger parts of my life than they were before - friends of friends becoming my own friends for example. 

I also pushed myself - there were things I didn't do during my marriage that I would have liked to have done, which I didn't do because I had settled into a routine and didn't want to rock the boat. I therefore prioritised those things, as I knew I wanted to do them - for example I joined my best friend at his weekly games night, through which I've made half a dozen great friends. I'm a huge nerd, so I hosted LAN parties with those same guys at my house - these are now quarterly, and there's about 12-15 of us who gather together and it's barrels of fun I denied myself in the marriage. 

Now I didn't need to deny myself that in the marriage - my ex had encouraged me to do more for me, I just never did as I was in a routine and I felt I had to stay home and look after my ex (there were health issues, but there was definitely an element where I was using this as an excuse). I still had denied myself those activities though, and I therefore took the separation as a catalyst to do those things for me that I wanted to do. Best decision I've ever made, as my life is now much bigger than it was, and I'm a lot happier. 

In terms of what to do with your life when she leaves - this is both the best and worst thing - you can do whatever you want to do. You will be free to make decisions for yourself, by yourself and follow them through. This freedom is amazing, but also scary! I was used to running decisions past my ex, and suddenly I found myself master of my own destiny and not sure what to do with the power!

What you might want to do (what I did, now I think about it) is give yourself a little space and time. Although I kept the house, I moved back with my parents for 3 months to give myself space to recover. It was nice to have someone I could talk with, but also on a domestic level it helped to have my washing done and meals cooked. It seems lazy to look back now, but it made such a difference when I was a mess to be looked after - I kept going to work, but a lot of the chores of adult life I was able to shirk for a bit. 

After 3 months (which took me into a new year) being looked after and doing whatever I wanted for fun (my credit card took a bit of a beating) I took the reins of my life back. I redecorated my house, and moved back in when it was done and started 'being an adult' again. 

I don't know if your work allows it, but could you take a sabbatical for a few months and heading back home to your close friends and family? They will want to help you through this. You don't have to decide now exactly what you're going to do 'big picture', you just have to look after yourself.

I don't mean to be cruel, but you don't have to think about how she's going to take your actions. You talk quite a bit about how she feels about what you might do, but you don't have to factor that into your decision making. 

Hold onto that ever-so-slightly excited feeling! It will grow. There is opportunity in all crisis. You're doing great!