This a very rough guide on when to replace struts/shocks, but typical half life is about 30K miles. What that means is that at 30K miles they've lost roughly half their damping capability, at 60K miles another half of the remainder (1/4 of original damping), at 90K miles another half of the remainder (1/8 of original damping), etc. You're at a mileage where you'd be considering replacement regardless of the supposedly bent strut.
The first question that needs to be answered is what do you really plan to do with the car? You indicate you might do some track days but if you're not serious about that you don't need to spend the extra $$ for higher performance dampers. If it's really just going to be street driving then the
Bilstein B6 would be a good choice. If you're really going to autocross or occasionally track the car then you might want to step up to dampers which have adjustable damping and then there more decisions to be made.