This may sound stupid, but to the guy who's looking to merit RDM for solo....before you go waste all the time meriting make sure you're actually GOING TO SOLO. Try it out a few times, wait a few weeks, make sure you still are. I dinged 75, swore to everything holy I was going to solo the world on RDM, maxed out bio III, etc, etc, then never fucking solo'd anything, other than like 2 zips. I eventually went back and re-did all T2 merits for phall II and whatnot.