Hello Joe! As far as the weight of these goes you tell me what you are hoping or when you order and that is what we shall shoot for it for you! Doing a trem on these is no problem!!! The extra wood missing is not that much and will not create a problem for you. I can use a 1/4" top on either a hollow or a solid T(although its extra on the solid one because they are priced for the 1/8" top, it can be done). 24-34" retro fit necks will work just fine as well with no problems and they will not no get in the way of a neck humbucker pickup. Thanks for the questions and take care! Tommy.