I like the way you discribed your method.....it seems to be the better way for lets say 'smaller scale kits' like 1/72, 1/48 and 1/35.
I will try to help?
So it all really depends on your style, experience and size of parts you are dealing with.
For me...lets say...for the collective and cyclic sticks....
I always remove the parts from the tree.....scrape and ( or ) sand the seem lines from around the parts....then paint the top, handel or boot.....then the next day or much later that same day paint the rest of the part.
I would paint the floor seperate cuz its always a darker tone than the walls...then I would paint the soundproofing and bulkheads that interior grey tone.
If I had my "DREAM" shop my Airbrush BOOTH would be right next to my main work station so all I would need to do is turn my chair and GO!....fast, clean up right there! and I could keep on going.....other wise I would airbrush everything I do!.....but....I dont so I hand oaint most of my small parts.
More questions?.....go right ahead.
Straighten up and fly right.....