This is looking really cool!

I would even consider not doing a wash at all except to just cover any little touch ups. Looks pretty cool the way it is. I really like how bright/contrast it is and how warm the colors are. The wash will darken it so maybe just a
really really diluted wash. ? Or gloss clear it first so the wash just settles in the recesses like a pin wash? Just my opinions. I'm sure you will do something cool.
Anyhow, looking awesome, your paint skills are flying along
