Busted control arm bolt. DIY or not?

I recently bought this car. It came like this. This bolt is normally torqued to about 101 ft lbs. I was thinking of using an irwin extractor bolt kit, but I think it may just fracture while trying to loosen it, compounding things further. I live in an apartment and have limited access to tools.

I have a drill and some bits, plus penetrating fluid. I don’t have a torch, welding, or any other power tools. Should I even bother or take this to a mechanic?