Speed is important in a studio environment since there’s always some looming deadline., big or small. However, there are numerous fields and smaller environments that aren’t nearly as high pressure. I wouldn’t worry about being able to fit in or get the job done.
As far as accommodating your special needs, look into something like the Logitech G13 Gameboard. It’s a palm sized mini keyboard with 25 programmable buttons, 5 custom profiles, and a thumb stick. You could map all of your favorite keystrokes to whatever buttons you want and save yourself loads of time. I own one and love it. I’ve got profiles set up for poly modeling, animation, sculpting, and so on.
It’s very ergonomic and highly portable. The profiles get stored internally. You only need to install the Logitech software on the host system if you move it to a new PC. Best of all, it’s designed for left handed use, which works for you because of the issues with your right.
FWIW, I got mine mostly due to severe crippling pain due to repetitive stress. My hands got/get so bad sometimes that the fingers go numb, they swell, I lose range or motion and I get shooting pains throughout. Not cool. This helps.
