Well, I read your post and it was neither too long, nor hard to read.
However, three things jumped out at me:
... my hands are getting sore.
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I want Cherry Brown switches or Torpre keys
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I had carpal tunnel surgery on my right wrist a few years ago and the wrist and hand are mostly recovered. My right shoulder cramps if I spend too long on the computer, and I blame the mouse for that.
(emphasis added)
My recommendation based upon your criteria is as follows:
Realforce 87U TKL "Silent" edition. I have this keyboard, as well as Filco's, Leo's, and Cherry's with reds and browns, and if you need quiet, then your best bet is the Realforce 87U. Don't bother with O-rings on a Leo, that is a poor substitute for the 87U. Also given your medical history, I would recommend the 87U on the basis of it having a softer feel than the Leo that you are considering, thereby making it easier to type on, and hopefully less stressful on your carpal tunnel nerves. Also since you said this is for work, then you can either expense it to your employer/ client, or deduct it from your taxes as a legitimate business expense (but not both ofc). You never mentioned a budget, so I don't think you are hard-pressed for $350. Now, with that being said, I really think you should seriously investigate an ergonomic keyboard like the Kinesis Ergo Pro Contoured (
http://www.kinesis-ergo.com/). It's about the same price as the 87U, and you may need the extra help, given the pain you are currently experiencing. Carpal tunnel syndrome is a serious issue. I don't have a Kinesis yet, but I think it will be my next purchase, as my wife has mentioned that she would be interested in using one. There are some members on here who are devotees of the ergo keyboards, maybe do a search and PM one of them for advice. Otherwise, get the 87U. Or get the Leo. Leo with browns is going to be an excellent keyboard, but for you I would recommend spending the extra money for the 87U or Kinesis ergo.