I've done some minor modifications to the duplicated parts and added details to the chest piece, so I've temporarily assembled all the parts.
Since I plan to display multiple units, there's still more work to be done: further modifications and detailing of parts, duplication of major components and modifications to the duplicated parts, and then painting and decals. The battle continues! (lol)
Looking at my photo history, I've been working on this since July 21st of last year! (lol) It's been a long battle!
My goal was to surpass all existing Gouf Custom (RFV) models I could find online, and it looks like I'm going to achieve that! (lol)

Gouf Custom (RFV) - All parts pre-assembled | しゅん's Gunpla works