I sure hope you see this, there have been many replies....
I just looked and this is a long post. Here's the exec. summary read the whole thing for additional detais.
1. Get no-line bifocals.
2. Get a great (not just good) option to make them.
3. Maybe get a set of "computer glasses".
4. Make sure you get a quality frames with spring-back hinges.
I have been wearing glasses since 3rd grade and a few years ago started going down the path you are on...
I don't know how to advise you on verifying a great optician, but you need one. Not a good one, a great one. I've lived in 3 states and found that people that are just "ok" at making glasses are pretty common. The thing that has been the biggest help for me is (sadly) a solid pair on no-line bifocals. Reason I say you need a great optician is that they are a little tricky to make properly. I've had friends and colleagues tell me that they just can't get used to their bifocals and maybe it's them, but more likely it's that the glasses were made "ok", but not great. I wouldn't even consider one of those super cheap "glasses while you wait" places or the like. They tend to have inferior quality frames which don't hold up. I imagine their optics are probably bottom rung as well. It's just like music gear, you get what you pay for...
So, anyway if you can find someone "great" to make you a set of no-line bifocals, that's pretty ideal. I would also recommend a frame with lenses that are a decent size. I have a pair of bifocals that are stylish, but have lenses that I wish were a little bigger so I have more surface area for the transition between regular vision and up close vision. I got a very stiff neck looking out of the small-ish bottom area of my glasses doing computer work.
I do a lot of computer work for work, so I got a set of glasses that are "bifocal strength". The entirety of the glasses are made for bifocal distance. No more stiff neck!
Last thing. Get frames that have spring-back hinges. That may not be the right name for them, but they're the kind of hinges that if you bend them away from the eyeglass frame, will spring back a certain amount. That will help your glasses hug your face a little better, so less frequent adjustments, and they frames themselves will last a little longer.
Hope you got a chance to see this. Good Luck!!