Magazines will be a killer expense as well. Ten WA magazines will be well over run 1000.00. Buy some G&P WA Magazine O-ring kits as well, as you will definately have some leakers right out of the starting gate.
Kevin I am really hoping the VIS goes on that new MTW of yours.
I have attached a photo of mine (lower) to give some perspective as to what RS accessories can go on a MTW: