Well, slow and steady wins the race...
However I'll be very surprised if you don't have issues with the poly on the body delaminating in the future.
Oil based polyurethane over an acrylic lacquer is not a recommended combination due to their incompatibility. Lacquer can continue to expel gas from it's solvents (often referred to as "gassing off") for weeks, months or even years. Polyurethane will cure like a hard plastic over the lacquer trapping the gas which is trying to escape. This will cause the poly to lift, bubble and potentially peel.
A lacquer clear coat is recommended over a lacquer base coat.