Go OC at least thru NITROX but you don't need to bother with big doubles if you are sure you are going RB. If you get a pony, make sure it is big enough for bailout with the RB.
After you go to RB, you will probably never want to dive big tanks again. When I am not diving a RB, I usually dive double or triple 40s.
After you go to RB, you will probably never want to dive big tanks again. When I am not diving a RB, I usually dive double or triple 40s.