Ober', those are all good points.
I should say though that as far as I'm concerned this is really just a "Hobby" for me and I'd more-or-less just like to "Justify" my hanging out at shows all week-end as opposed to trying to sustain myself with it (I have a great week day job).
As far as your questions go?
#1, Well, when I was working for one of the larger dealers here in the North-West I must've sold a couple of hundred Romanians,SLR's,MAK's and Maddi's to the guys around here and we were just a tiny percentage of the total. Also, one thing I'd do to increase interest among my potential customers would be to have examples of the more popular post-ban guns displayed in their full "Glory" lol
#2, time-per-rifle will vary of course but from past BBL assemblies and front-ends (On postban guns that I perm' attached slant brakes on and "Filled" the BL 'till later) I've done I'd say an hour each if I go slow and do a good job (This would just be for the front-end).
#3, I have an avdantage going in to this in that I have a good relationship with most of the guys on my old show circuit and THEY would do alot of the selling for me. Parts guys would use me as a reason for THEIR customers to buy and dealers would do the same to potential buyers of now "Naked" (Un-adulterated post-bans) guns they'll take in trade or still have in inventory. I'd also post shows I'd be at 2 or 3 weeks in advance on the various boards I belong to so that folks would have the time to order their parts if they wanted to.
#4, The last line from #3 would take care of some of that and local (At the show) dealers would help some more but I'd probably keep several sets with me for those times when the other two options weren't available. More stuff for certain types than others of course.
#5, Pretty much I'd probably limit myself to 4 types. SAR's, MAK's, SLR's and Maadi's.
Anyway, like I said, it's just an idea to maybe cover the costs of being at the shows while I wait for the "Killer" (lol) deals to walk through