You could always do my tank while you’re at it!
The only observation I’d make is that it is essential that the metal is primed right away. The sandblasting takes the surface right back to raw metal and even though it cannot be seen right away by the Mk.1 eyeball the surface immediately starts to oxidize and so requires sealing ASAP with a good primer or whatever system you plan to use for the best protection.
As to paints I’ve had excellent results with International two-pack yacht paint in the past. Even if brush applied once properly cured it can be smoothed to a very acceptable finish only limited by your time and patience. It is by design non porous, has good knock resistance and is pretty durable too.
