> 3) Use a kinesis advantage. Blank keycaps for style points.
These keyboards are quite expensive, but totally worth it. My previous employer offered them as one of several keyboard options. I went with it due to some pain, it took maybe 6 weeks to used to the layout. Ended up buying one a few months later when they went on sale (usually 10% off around black Friday), as my pain had gotten dramatically better. The company that makes them is also pretty hacker friendly - they sell spare parts and they've been willing to help people who want to make custom controllers for their keyboards.
I actually hacked a trackpoint (harvested from an old IBM desktop keyboard) into my kinesis and used that for a while, but due to the way the sensor works it really needs a solid mounting to work well which I just couldn't achieve.
I personally have had decent luck with a vertical mouse (anker makes a cheapish one that works fine).