The wheel looks great! Since you are not leaving the Jeep outside, in direct sunlight, the poly will be more than enough protection for the time frame you are planning. I removed all 6 layers of paint and some globbed on Bondo on our 2A. I used some left over rattle cans of Matt clear on the bare steel. That dose lasted a couple years before some surface rust started showing. I knocked the rust back down, and used a clear laquer to try it. I haven't had a chance to pull it out of the shed to see how it weathered the winter.