Ship 1 - Must be a Fighter of some kind
Ship 2 - Your 'daily driver' all rounder
Ship 3 - Must be a 'profession' ship. It could even be another fighter or capital
My 3 choices will be:
Ship 1: Vanguard sentinel: it has a good weapon load out and with a S5 mount you are abel to get preatty everithing you whant, plus the ECM, a turret and a swappabe pod make it adaptable to different role, like dropship, E-war, torpedo carrier and so on...
Ship 2: it will be, hands down, the Starrunner, cool loking, lots of option for game play, a good cargo...
Ship 3: this is more difficult since there are a lot of game play that are fun, but I'll like to have a base of operation a central hub, so I'll take the Endevour. Since the presence of lots of pod this can be used as a mobile base, hospital, explorer, and, basically, a freaking big mobile house.