Both those body companies have a good name and Pete & Jakes is a staple in the hobby, so parts wise you're on the right track. Where most people get sideways is in underestimating how much it's really going to cost and how long it's going to take. Building a ground up vehicle and purchasing (one way or another) all the necessary components is a relatively complex task, especially if you're shooting for a quality build not just a bare bones get down the road deal. If you haven't done this sort of thing before, you'll likely need to double your expected budget and tripple the time frame you've got in mind. Not trying to talk you out of it, or discourage you, just trying to help you set realistic objectives which will ultimately lead to better success. A high percentage of this type project never get finished because the person gets overwhelmed, burned out, whatever expression you prefer, because they were unprepared for what obstacles they had to overcome. If you prepare wisely you'll minimize the downers and enjoy the fruits of success.