Once you get the car, there is so much that you can do, there is pretty much always a way to get it to work for you. On the footbox portion of your build, you may spend some extra time working on it and getting it right but if you have the wallet for the build, you will have the time and wallet to get your build right. You are certainly asking the right questions but you will just need to be patient and resourceful when it comes to the footbox. You may be pleasantly surprised as to how much some of these setups work right out of the box.