You can always make do without certain items. Dremel Multi tool is good to have as well as a bar sander, but they are not really necessary if money is an object. You can get by with several pieces of wood with sandpaper glued to it. I built my aerostar with this, and it is fine. Suggest you take several small pieces including several 1x2x12, with various grits glued to them. I used spray contact, and it works well. Paint stirrers work well also. These will last for several planes. A drill is necessary, but you only need a basic drill set. As you progress, you will find that you will collect a lot of items, but you can get by on basics for the initial stages.