I am Installing a Stacked Stone Wall Inside my Home (Living Room Wall),The stone is a Cultured Stone Product from Owens Corning. It calls for Type N Mortar to be used.
I don't want to have to mix all of this by hand, I Live in a Town Home, Can I use a different type of Mortar Mix or is there a Ready Mix for N Type of Mortar..

I'd go with a masons mortar mix like quikcrete. Quikrete Cement Mixes, Mortar Mix, Mason Mix, Portland Cement, Masonry Cement, Glass Block Mortar, Block Mortar, Brick Mortar, Brick Grout

I agree with the products mentioned by ballengerb1, however if you have never mixed these mixes before by hand it really isn't too difficult.

Take a 5 gal bucket, pour 1/3 of the mix in first and then begin mixing with a margin trowel. Mix the mortar mixture well. Do this by folding the mixture from the bottom into the water.

Do this until the water is no longer in a puddling water and the mix is smooth. You will know when it's ready when you turn the trowel over and the mix does not immediately fall off the trowel.