I think you saved yourself by not letting the wash sit on there for any amount of time.
Acrylic gloss coat is good stuff. It can even be applied over dried, cured acrylic colors. I typically use a combination of acrylic and enamel paint for my color coats, depending on what I need and what I have.
Here's a case in point. I'm just finishing a big motorcycle model. The fiberglass is all yellow, in this case Tamiya acrylic. I coated it with multiole applications of acrylic floor finish to get a nice shiny finish. Stupidly, I was touching up all around on the bike with black Testors enamel on a fine pointed brush. I picked the thing up to turn it around and of course stuck a finger in wet black paint. Then grabbed the bike by the tank and moved it again.
Big black fingerprint right on the tank, including across the decal. Yes, sh*t happens. So I dipped a piece of paper towel in paint thinner and wiped it. Fingerprint came right off, no harm done to the gloss finish or the decal.
Another nice thing about acrylic clear coat is that it can be removed from on top of enamel (not on acrylic) with an ammonia solution like window cleaner. If you dip an aircraft canopy in clear acrylic, and later mask and paint the frames, then get bleed under the tape, the whole mess can be removed with Windex and you can start over.
Hope that's helpful,
Bill