Dave Great work on the P51, especially in 1/72.
I know what you mean abour Academy decals, I did their Komet a couple of years back, and they were like leather. This was before I had discovered the wonder of Gunze decal setting solution!
I can thoroughly recommend gloss white as a primer
I'll probably end up going with a slightly simpler camo scheme for this build, same aircraft just a few weeks earlier, as I'm conscious that the clock is running on this GB. It'll now look more like my sig pic.
Karl