I have all the other parts so all that's holding me back is the cooler.
Will this one hold temp and could i get a alteast a 5 gallon 10abv beer out of this.
What abv does 1.100 get me?
That cooler will be good. You'd have fewer problems if you mashed in a blue one, but nothing serious.
1.100 would be an 8-12% ABV beer. A 52 qt cooler should get you up to at least 1.120. http://www.rackers.org/calcs.shtml