You do what you have to do for you, your budget and your future. Tough crap if she doesnt like it. You didnt exactly care for being dumped by your W but you had to accept it and now she will have to accept you doing what you need to do for you.
Your W is a control freak (trust me, I used to be one so I can spot it a mile away). Most WAS fail to realize once they walk away the perks of marriage are gone!
My H had the audacity to call me and ask me to take care of the renewal of the vehicle registration. YOu know, on the car he took 13 months ago with no legal agreement in place to do so. Um yeah, let me get right on that. Are you freaking kidding me? He has a pile of mail here that stands nearly 12 inches tall that has been here since last NOVEMBER. Yeah, I used to take care of the mail but no more. So there it sits.
I often wonder if WAS are truly nuts. They want out but still think the LBS will take care of things, do as they ask, be there for them when they are bored enough to want them around and still get to make joint decisions. It is something I will never understand.
Let your W do all the driving to pick up her kids - you take the apartment you want and can afford. If your job doesnt pan out there are always options. Heck, Starbucks pays decent and offers insurance. It may not be a dream job but it has pay and beneifts and it will keep you near your kids.
In your mind dump her just like she dumped you. Once she gets a good taste of that, well, things just might change in some capacity.