Which tool do you use to install pedals? Such as a Look Keo?

I have a 15mm Park Pedal wrench ordered to arrive that is in the link below...

http://www.parktool.com/products/det...27&item=PW%2D3


But, now I'm thinking maybe this will not work on the Keos? Should I have gotten a 8mm Hex wrench instead? Like the one in this link...

http://www.parktool.com/products/det...=7&item=HR%2D8

Also, on cleats...

All I own right now is my bike multitool that's in my saddle bag with small wrenches. I think my current spd mtb cleat takes a 4mm, and the Keo takes a 3mm.

I considered buying this Park hex triangle tool for cleats due to better leverage. Didn't know if would be worth it. Unfortunately, it looks like the 3mm and 4mm don't come on the same triangle.

Park hex triangle tool....
3mm
http://www.parktool.com/products/det...7&item=AWS%2D3

4mm
http://www.parktool.com/products/det...7&item=AWS%2D8


I know pedals are suppose to be hard to get off. Though, when I have watched it done, it literally takes a few minutes. Well, with the right hands and a proper tool. My ploy is to become more self sufficient.

I hear grease can work wonders in helping ladies with weak hands work on their own bikes? I really hope I can do it. Any tips would be appreciated.

Oh btw... I decided after a lot of TE reading that if I was going to own tools, I would invest in the Park brand... that the quality is suppose to be worth the extra $ ???... so, I hope anyway.

Thanks!
Miranda