At KEH the f3.5 is going for $49.00 in EX condition. Test them both an keep the best.
I am in a somewhat similar place, only not with Rokkor glass which is wanted. I got a nice Minolta XE-7 and three off brand lens. They look and work fine, but there is no resale value at all for them. Hard to sell to anyone.
RF's : Bessa-R, Kiev 4AM ,FED II, Yashica Lynx 14,Yashica GT, Yashica Lynx 5000 , Olympus XA, Argus C-3
Other :Minolta XD-11, Yashica FX3 super2000, Yashica-Mat 124G, Rolleicord Va
Digital :Nikon D50, Canon A620, Panasonic FZ1v2