if using automotive paints i highly suggest adding a flex agent, that lessens the cracking with time
i have a 1/4 scale monocoupe that was covered with koverall 16 years ago, used clear automotive laquer to fill the weeve, then polyurethane color and clearcoat. i did not use flex agent in the laquer clear all those years ago and you can see the cracking if looking very close.
she is about to get a face lift this winter, a bit of sanding and repainting, (a few small repairs) but this time i will use the flex agent

but then again how long will the glue joints last on a model?......so far 16 years and still flying, and yes i do give her lots of snap rolls!!!