I agree with SJ - set something that you know you'll be happy at from past times.
Also, set something that is going to be maintainable and achievable. I didn't set my T for ages and am actually upping the weight because as time has gone on, I'm getting happier with my body and now feel my T was too low.
So, take it as it comes. It's always good to set mini Ts along the way too.
Hope you're enjoying SW xxx