I would recommend some ascorbic acid/phenidone developer like DS-14 od DS-15 if you can mix those yourself (you will save some $ too).
But Rollei Vintage Eco Friend seems OK according to the MSDS.
Citric acid solution as stop bath - in fact, Fomacitro is the same just with added exhaustion indicator.
No fixer can be poured down the drain without silver recovery as the silver compounds are toxic. You have to recover the silver from the solution or dispose it properly in some waste disposal facility near you.