I hope your a midget, especially with a 7" chop, and channeling.
I've never seen a model A with a chop over 5" that I liked, and in my opinion, 4" is about perfect. My car was a 4" chop, with no channel, caravan seat sitting on the floor. I'm only 5'9" tall, and headroom was getting tight. Sure you can always lean back, but how much fun is a car that you can't comfortably drive ???
I know that you're excited to get started and all, but step back, take some measurements, and really think things through, so that you end up with a car that you can actually get into and out of without a helper, and a car that is comfortable enough to drive more than 5 miles at a time.
As far as a parts list with prices goes, add up all the big parts that you need, take that total, and add 50% to it. These things will nickel and dime you to death, just when you think you've got everything big, then you need wire, fuses, brake shoes, brake lines, fuel lines, radiator hoses, clamps, nuts, bolts, shocks, so on and so forth.......In the last 2 month push to get my car running and on the street, I spent about $500 at my local NAPA.
I'm not trying to discourage you or anything, just be realistic about it.