RE: jp 111 vs evo 90
I agree with Dolf, the E80 would be the spot on board for 5.0 and 5.8 at 73 kilos. However (again agreeing) the E90 will provide lots of extra float which may be welcome sometimes. For me, the E80 pretty much planes as early with a 5.8 but the 90 is more comfy at slow speed.
The E90 will be perfect partner for the 74, they are very similar and the 90 does in smlwer smaller waves what the 74 does in slightly bigger or faster stuff. Regarding the planing: If you like the 74, then you will have no problems whatsoever on the 90.