Well . . . Maybe I wasn't supposed to try the Android route . . .
Got the Hannspree 13 inch Android tablet this evening. This one works fine for the most part. I am pleased with the display and general software load times for an Android. Music chart display is crisp and had good contrast. I had no problem reading the sheets even with my poor eyesight. I used a USB port to connect a wireless mouse and keyboard to do all the typing necessary for setting up accounts etc. There are two ports. Both are intermittent for the wireless keyboard and mouse. They worked OK for file transfer from the PC to the Tablet. I found that if I switched from one port to the other the new port worked for a while for the wireless keyboard and mouse. These ports are not needed during performance so it's not a show stopper.
Orpheus is not ready for general use. It has a lot of things that don't work properly or are not dependable. I moved about 600 PDF songs into Orpheus. The data base indexing makes a lot of errors. When you select a song from the list you often get something else. I think this is a cache problem but am not sure. And, it is conceivable that I somehow caused a corrupted cache, but that shouldn't be possible. I plan to contact Maeve Lander again to go over the problems that I found.
Changing pages in a multipage song takes about four or five seconds which is borderline for me but acceptable. The PC software (and the Music Pad Pro) does the job in less than a second. I am used to simply tapping the right or left side of the display to change pages. Orpheus needs a finger swipe from left to right or vice versa. This would not be a problem for someone using a foot switch to change pages, and the finger swipe probably would be OK after use for a while. Orpheus is unable to work with sub-directories (folders). My PDF sheets were in several locations (sub-directories) and could not be imported to Orpheus until I moved everything to a single directory (folder). I know that Maeve has this problem high on her fix list. These are things I found in about an hour's use. Will try again tomorrow. I may shift back to MobileSheets (or my old dependable Music Pad Pro) until the next Orpheus update is released.