I use to break every little thing down on estimates and invoices but it seemed to confuse people and then I wouldn't get the job. Now I just put material cost and labor cost or just a lump sum type bid and I am actually having less trouble with people. I wouldn't mention anything about renting, it isn't that you are trying to pull anything. The funny thing is in some cases it may be cheaper to rent a piece of equipment than owning it.
Do or do not. There is no try. yoda