After playing around with rodinal 1:50 at 5 minutes, the negatives are minorly thin. Thing is printing turns out better at something close to grade 4, where as if I developed it longer I get stuck with higher contrast. If my intention was only to scan I'd probably increase development time a little bit, 15-30 seconds; but the lack of tonality in printing would bother me so right now I think I got it where I want. The grain at this level is super fine, hard to even see with grain focuser.

I guess for EI50 I'll do 1:100, and try to get that time down as well. I suspect 1:50 with EI200 or EI400 will work out, guessing maybe at 1.5 minute increases per stop. Got some testing to do...