Hi Piotr,
I have this one, too - It’s been sitting on the shelf of shame for a while, about as far along as yours - maybe your bulid will give me the inspiration I need to continue....good job so far in any case.
I very much agree with Mario‘s recommendation - resin wheels from DEF Models or Miniarm, though expensive, really look a lot better - not only do they have a weighted appearance, they don‘t have that awful gap between the tire and the wheel rim, as is evident in some of your photos, unfortunately.
Jerry