I just noticed this about the decal. AquaCoat seems a lot like top coat and you'd probably be fine putting the decal directly over it. That said I have had best results with waterslide decals when I put them over a coat or two of dry top coat. I have never put one directly over Aquacoat (if you do I'll be curious about the results). My experiments with putting the decal over shellac or bare wood did not turn out too well. My best results have been when the surface is smooth and shiney under the decal.
BTW the body looks great. Really nice color and grain!
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