Inasmuch as this is a vintage equipment group you might consider an American Optical AO570 with the model 145 eyepieces for about $100 on eBay. I can attest to the superb optics, with magnification from 7x to 40x. Illuminators are available for another $30-50. You do have to familiarize yourself with the models, various bases available and the eyepieces. I got an AO570 wit the wrong eyepieces included but got a correct pair model 145 separately. Gorgeous stereo view. The AO569 is a little cheaper but the optics have marginally less resolution. I’m happy I got the model 570.
Steve Holland