You'll probably need a center pod as an auxiliary fuel tank. Those early jet engines were thirsty beasts and not particularly efficient.
I was thinking about what we had discussed on another thread Evan, about a USN F-82 and where the arrester hook would have to be located, we came up with an extended pod sticking out behind the trailing edge of the center wing section.
I'm thinking along the same lines here, using a couple of the big radar pods I have spare. What I'll do is shorten what is sticking out the front (no prop to interfere) and have it protruding about 1/2" (12mm) beyond the trailing edge. The hook would extend out from there but then be retractable into the pod end.
Fuel wise, as I'm not having guns in the wing center section, all available space in the wing will be for fuel tanks, plus I'll have four of the F-82 300 Gal tanks under the outer wings. Another thing that cancels the use of the wing guns is that the wheel bays will be located right where the ammo storage bins are. I thought about using the wing tip tanks but the aircraft is already a stubby little thing, it just doesn't look right with the tanks on the wing tips. I did play with the idea of stretching the fuselage but in the end, decided not to.
Matching the tail-planes between a F-82 and just one FJ-1, I calculated that there's not a lot of difference in area (in 1/72 scale and mm's, the FJ-I had 1050 sq' mm, whereas the F-82 tail-plane works out to 1100 sq' mm), so to me there's not enough tail-plane for a Twin Fury (the F-82 got away with it because the rear fuselage is extended 67"[RW]). I'll probably add half of each FJ-1 tail-plane to the outer side of each fuselage.