I wouldn't skimp on this.. it's an important control that needs to be easily used when you need it most. Adequate purchase goes a long way to making this to be true.
Also, while it will be tempting to go small on the gear and line, remember that skinny lines are hard in the hands so use a line you can easily grip (within reason, of course, but size the gear to the line so that you don't have extra drag)
You'll appreciate being able to easily make minor (but rewarding) tweaks !
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)