OK, my .02 for ya.

I Don't have a Koll, But get a decent one.
I have a Du-Bro Hi-point with the extra bits for balancing blades.
It does a good job. Take your time, get it right.
Get a good set of ball-link pliers, you won't like the cheap ones.
I started with Hardened Allen wrenches and now have good Ball drivers too. They speed things up. Do final tightening with the wrench for consistent results.
My X-Cell is mixed English and Metric - BUT I bought it used, all the parts I've bought for it are metric.
And yes, Get the Japanese screwdrivers!
I buy one new tool or set with every major upgrade, It's getting there!