PT: The Stinger is a great flying plane.
I built mine around 25 years ago with a few minor modifications.
I won the kit at a raffle and upon examining it, I noticed a lot of unnecessarily thick wood, especially on the fuselage sides and the tail surfaces.
Simple modifications:
Made the fuselage sides from 3/32 balsa, laminating carbon fiber/epoxy on the inner sides.
Made the stabilizer from 5/16 balsa, elevator(s) from 1/4 and the rudder from 1/8.
Per Dale Kirn's suggestion, I powered it with a STOCK (except for an OS NVA) Fox 35 turning a 9 1/2 - 6 APC prop, 3 1/2 ounce non-uniflow tank, Brodak 10/23 fuel and 60 foot .015 lines.
It balanced perfectly with the Fox, needing absolutely ZERO trim adjustments.
I run it screaming lean, taking advantage of the fact that it performs best when flying fast.
It is an absolute joy to fly but keep in mind that with the V-tail, it requires more down elevator for outside maneuvers.
Seems like you've acquired a nice assortment of engines and all should work well in the Stinger but in my opinion, the Fox 35 is the way to go. Keep in mind that the cheek cowl is rather small and may not accommodate larger engines.
I'm glad I took Dale's advice regarding engine choice.
Best of luck,
Bob Z.