Ok, I've read thru this twice to be sure, but I don't think anyone has actually answered the right question.

The jump drive will jump you 8 sectors or to your waypoint, whichever is closer. You will always use full charge.
You can not make a partial jump on a partial charge. To jump 1 sector, set your waypoint 1 sector away.
I believe one module is all you need to jump your ship, it'll just take a while to actually charge.
Ideally, you want 1 module for every 20 blocks on your ship.
Now I just hope I understood the wiki and the original question.
The answer is...your question is wrong.brought me on an idea, a mod that calculates how many jump drive modules you need to go 1 sec per jump-2 sec per jump etc.

The jump drive will jump you 8 sectors or to your waypoint, whichever is closer. You will always use full charge.
You can not make a partial jump on a partial charge. To jump 1 sector, set your waypoint 1 sector away.
I believe one module is all you need to jump your ship, it'll just take a while to actually charge.
Ideally, you want 1 module for every 20 blocks on your ship.
Now I just hope I understood the wiki and the original question.