@Akaru88 That looks fantastic! Wonderful metallic color. I'd be tempted just to display it like that (although I just love Zaku and Zaku adjacent suits)
I would love to display it with no armor, but unfortunately, it’s Gundam Marker EX which doesn’t look the same after topcoat and doesn’t tolerate UV light very well either.
I personally assemble the kit so that I can decide on what needs paint then I take everything apart, paint it, and put it back together again. I have heard of people that paint will the parts on the runner then cut them out and assemble, but I don’t like that method because it leads to needing to notch up nub marks and it’s hard to get a good result that way.