BV,

My starting array of EP's would consist of a 25mm plossl, a 12.5mm plossl,
and a 6mm orthoscopic. The orthoscopic, while offering a smaller FOV,
serves up the contrast desired at higher powers.

Don't break the bank on the plossls you acquire at this point. . .something
in the 50 to 75 dollar price range should offer sufficient performance.


Martin