Enough to tailor yourself to your opponent, loading up more depending on who you are fighting.
Plenty of stun gear, netting, wrist darts, pistols, and grenades to immobilize, most bounties are non-lethal.
Ion gear for droids/shields
Stealth, jammers and decoys to get away, or another escape route planned out. Holoprojectors, smoke, stealth ship or a quick ship.
Have to think about entry and escape with the target.
Sniper rifles or traps for lethal kills. Almost nobody will let you one-shot them, but its part of the work to setup ambushes, take out their guards etc. Tensor Tractor weaponry is still the nastiest for organic targets, imho, but it's OP'd for anything but big stuff.
Oh and good armor of course or some shield generators.