Pat
you didn't say where or when you would use this. If need that 10 degree bag then definitely do not nix the tarp. 1 oz of tp isn't enough. I don't see a need for a space blanket, but perhaps for a floor under that tarp. Its not really important to lighten up on 13 pounds, but you would save a lot with a 25 oz summer bag, if that's when you will use it. For short trips alcohol is ok to cook on. Depending on how you cook you may want a bigger pan.
Jim