Just my $.02 but the first 4 are required:

1100s (and the engine divider panel savers)
IBS
FAE (surprised this wasn't mentioned)
SuckG8

1433 Prop (check the don't kill your engine threads if you add the ballast above)

Ballast Pump upgrade. It's a time/money thing - you can use the stock GIII but it takes a long time to fill/drain. I added 3 Johnsons and kept the GIII to run the stock bags (under side seats and in ski locker)

Dual battery w/ VSR?

HDPE swim platform (not everyone thinks it's necessary- I did it and can see where it would dig in if the original platform were still there)

Wakemakers Black Friday Sale is coming! If you can't wait, get the code.