I'd love to do it myself but I'm working so much i just don't have the time at the moment, I've been through this before with an engine swap I did myself in my old celica gt-four. Knowing what my schedule is like at the moment, I'd rather just drop it off somewhere and pick it up a week later than do half an hour on it here and there for a few months!
I'll definitely be keeping it if I go down this route, just have to be certain it will be enough performance for the money. I really do love the car, I wasn't hoping for anything different, just FASTER.