the choice will be finding a happy spot for the # of SB attempts (LTM).
i wouldn't just look at the "top" guys. maybe pick a middle of the road guy, above average and 80/80 guy. see what happens (make sure their other ratings are comparable... a .300 hitter likely will get more attempts than a .250 hitter, right? so, avoid that)
make a few of these sguys and sprinkle them across league. shortlist or soemthing and dink around with the LTMs related to stolen bases. in addition to paying attention to league-wide #'s and keeping them sane to your eye.
i haven't tried, but i don't thikn you'll be able to get a 100sb/yr guy without raising it a bit too high... could be wrong. (even if it's a 1/generation type running talent -- i.e. ratings approaching "250" in editor).
if you "auto-calc" you should see 60's, maybe 70's, as high-water marks. to get higher, you'll have to dink around with the LTM.
500-600 career marks may be the most you see without 100's of years simmed for that 1 crazy ratings guy to show up
then, maybe 700-800, tops. (default, auto-calc type LTM for mlb 2017+)