What parts do I need?

I’m working on getting a parts list together for my new team, we have basically nothing right now. For a cascade or DR4B, what parts might I forget about that I definitely will need?

Cascade will need string or chain. Dr4b will need gears. Aluminum will be needed to build both lifts, get around a 30 hole long bar. Cascade will need 3, Dr4b will need 12 at least for the bars. Cross bracing need to be shorter.