I think just about everything will work. If you want to catch the most fish possible in the amount of time you're there, shaking a worm or dropshotting will probably do a lot of damage. Personally, I just want to catch em the fun ways :) Like rob said, it will probably be the most epic big hammer bite in the history of the world. If not 5", they will absolutely bite the 3". Besides that, I'm gonna have a slammer, maybe a jerk or crank, topwater, I dunno. You won't catch me shaking a 4" worm in 40ft on the opener, that's for sure, I wanna have fun with some easy reaction fish :7 I hear a lot of the fish are deep in that lake, so that's something to consider, but I think there'll be plenty of fish throughout the water column to provide some entertainment.
-Brian