For 7" I'd lean towards 1.5"...but could always split the difference with 1.25". My Fallkniven A1 has a 6" blade and is 1.25" wide and it looks great. Really depends on what look you like and how it will be used. In my mind, with a tanto style blade, less width would give it more of a Japanese look...and up in the 2" range starts to give it a cleaver type of look. You want to slice or you want to chop...or something in between? I personally like the middle road. If it was going to be my knife, I think that 1.0" is a bit slight...but that an extra 0.25" to 0.5" would be enough.