Very good work Rob, but I would be cautious of making things "too neat". I've been making a similar mistake in that if you want an "exact" replica of the build its actually pretty rough. If you look at the photos in Skydivers reference the build is actually "uneven" in places, particularly around the seam around the PD heads join. Its quite gappy. Some of the armoured inserts are also a little different if you compare them.Many of the guys actual modelling skills are producing models better than the originals. The PD is perhaps one of the best examples of this.
Like you I'm at the kit collecting stages, though I've got a lot, there are a few that are proving difficult to get. Also confirming which to order from the Plastruct catalogue and in which quantities are likewise a pain. In the UK the lampshades are "uncatalogued" ,codes are different, but the guys working there are very helpful. But we will get there in the end.