I like the softer 7′ rods for bucktails and plastics. 6500’s cast pretty good, a power handle will reduce fatigue.
For jerkbaits/slashbaits, and larger cranks I like rods 6′ or slightly longer, extra heavy, and extra fast action. I like a tiny bit of tip flex while working the baits, I seem to get more control. The reel is your choice, I like 6500’s, just keep them clean and dont engage the reel in the middle of cast and they wont wear out. I know a couple musky guys who swear by 7000’s even with the lower gear ratio.