85/100/135 legacy lens recommendation

Have you considered using a zoom ?

I have a zuiko 75/150mm that i find very good for portraits. It is not very fast (f 1:4) but compact and light. Results are not bad at all - plus you can get it very cheap (20€ maybe). Not a bad way to warm up using manual lenses !

I also have a zuiko 100/200mm. It is even better, but slower and not as compact. The IQ is outstanding though ! And very affordable too.