My usual setups that I have rigged up and ready for largemouth are a weightless senko, a texas or carolia rig with a worm, lizzard, or other creature, a jig or drop shot, and a spinner bait and/or crankbait. It always seems like you need one more rig no matter how many you have. I usually have a mix of casting and spinning setups. I prefer using spinning gear when I'm drop shotting or jiggings and with the weightless senkos sometimes and like the casting setups for more of the 'power' fishing techniques (cranks, spinners, jerkbaits, etc.). I think the three you mentioned would all be good rigs to have ready. You can cover a lot of different situations with those three setups.