On Friday, November 23, 2018 at 10:23:18 AM UTC-6, wrote:
Thanks to all for suggestions
To clarify
We did not strip old paint
We wet sanded and exposed some aluminum
In random places
The ship is still 95% covered in old paint yet
100% of surface wet sanded
We covered exposed metal with etching primer
We will be spraying without a booth,outside on a dry no wind day

Perhaps an equipment enamel with the optional hardener available at most farm and implement stores would be suited for your project. Atwoods, tractor supply etc. You might research painting and the effect of dewpoint and condensation on the freshly painted surface before you pick your day.
Good luck.
Scott.