How may guys/rods do you fish with? If no more than 9 rods, sounds like you got things covered. If so, I'd add to the tackle box with spoons and flashers/flys or meat rigs. If you have all the lures you need, then do you have wire divers? If no, you could add a couple wire divers and then run 4 divers at a time, highs and lows. If you are adding lures, I'd buy stuff over time and get proven hot lures that are happening now instead of dropping a pile of cash on lures that worked last year. Hot lures change all the time. Some are one hit wonders and some produce consistenly over time.