One bee thats been stuck in my bonnet is to teach a very basic class in LF in an adult school setting. Well, no chance of that happening in the near future, but it could be a reality at a local senior's home. I now have two 5x7 Agfa Ansco cameras plus a third for parts(why not 4x5? My 'students' wil have an easier time focusing with a larger gg.) Since I'm financing all this myself cost is a big consideration so I'm looking for two identical shuttered lenses that won't break the bank. I've been thinking along the lines of 210 or 240 G- Clarons assembled from barrels and polaroid press shutters, the 190mm WF Ektar or either 12" or 14" APO Artars. These lenses should give me adequate movements to demonstrate perspective control with 5x7s and are sometimes can be bought at bargain prices on eBay, but I was wondering if there was anything else I should be looking for. There is also the issue of tripods----any recommendations for inexpensive new or used tripods that will handle substantial 5x7 woodies? Thanks for any and all ideas.