I'm roleplaying with an enclave character at the moment, I'll join up with the remnants and whatnot when I get the chance, right now I'm trying to decide what armor and weapons to use. I'm thinking about the Marksman Carbine when I get to it, maybe some sort of energy weapon pistol, I'll be using the remnants power armor when I get it, up until then though I don't know what gear to use or any quests to do that would tie in well. Any suggestions?

Energy/Plasma weapons, Combat Armours and T-51B Armour, and Gauss Weapons. Also can't go wrong with heavy weapons such as miniguns.

A full suit of Remnants power armor, and an energy weapon. Have fun, I know I do.