Rostra cruise

Just ordered a new Rostra cruise control. Thought I'd be ok with a throttle lock, but my hands are in way too much pain, tendonitis, cramping, etc., so here goes....

I've scavanged through the tech boards (old and new), I've installed one once before, but before I begin, any new pointers from someone who's done it recently? Any new ideas or warnings? One thing that jumped out at me was someone used a different switch out of an old Chrysler (Normally open vs normally closed). Any more thoughts on this? I ordered their (Rostra's) switch and will give it a try in the name of simplicity.

I've also used the Audiovox, so don't suggest it. I do not like the vacuum issues or hoses.