I did a 3 in. hex GFG that was all hand sewed then hand embroidered. I did the traditional 1/4 inch inside each hexie. Currently I am working on the 1 inch and have decided I am going to do the 1/4 inch outside each row of hexies. For me the hand quilting is not going to be an issue - I will use thin batting and a solid piece for backing. It goes fairly quick once you get a rhythm. Tying that many hexies would take more time to me because you are pulling a thicker thread thru the 3 layers.
Just do what you like and not worry about what others think - it is your quilt and I am sure it will be beautiful whatever you decide.