It's a thought, but I've only ever cast wheels twice, doing them in two halves, other work being things like prop blades, exhaust stubs and so on. The wheels I cast were 1/48th scale, for a starter trolley and a bomb trolley, so not too detaild or important, unlike relatively large aircraft wheels. To be honest, it's an expensive thing to do, as the resin and hardner costs qutie a bit, so more cost effective to purchase wheels.
I reckon I'm going to have to improve the tread on the kit wheels, as they have the correct 'blank' face on the outboard side, as fitted on the Boston, whereas the ones you've got are spoked, as per U.S. Havocs / A20's.