Hey Drey,
Whats your bottom end on those kites?
I've got to get a bigger board, I normally surf a 6'3 due to weight (92kg) rather than height (5'7)and kite a 6' (it gets going fairly well for its size - straighter toe-in on the fins I think does it). When I ride a standard surfboard with a kite, it feels like I am towing some seaweed sometimes a fisherman

)
You mentioned you prefer Delta kite, I believe goofy footers prefer kites that sit deeper in the window than natural footers, how do your kites perform?
I ride a 2008 Nano 9m and a NEW OS 7m, feeling a bit over the Nano (sits deeper) but loving the NEW. I feel the pivotal kites have no grunt when trying to get out of a section - can't really turn on the power.
Would love to get my hands a fast flying fast turning power generating light wind kite for those 12 to 15knot days. The other option learning to go fixed but don't have the cahonies for it.
Cheers
Rich