I pretty much do the same thing. I sand with 400 grit, then assemble using CA glue or E6000 and screws / pinning. Wash with dish detergent, rinse with water & hang to dry. Never use a towel as they can leave lint. 2 coats of primer, then 2 undercoats of silver or bronze / gold, then top coat with satin black, then weathering. Always go with light coats in multiple passes rather than 1 heavy coat.