10.5 seems fairly far back for a 7-0.interestjng. I would think you’d want more rake with fins up there. Shows you what I know
Ive had longer twins with boxes up at like 11+
I think the 7-2 AG i have is further up than 11 which Allan said was good position for either keels or uprights. Ive ran both with good results although with longer twins like that I generally prefer uprights just to loosen it up. As far as keels i liked the nvs docs because they are smallish. Piggybacks would be good too i bet.