Hell yeah! I plan on doing this same sort of thing once I find a place to store my seat. I measured diagonal with the passenger seat forward to the back corner and it's about 66in. I'm 5'9 so it's only a little bit short but it's gonna be super tight for you.
I have a 19' ranger lariat fx4, live in Colorado. I wish I had the speaker upgrade because the stock ones are garbage compared to the "premium sound package" I had in my Honda Civic. I wouldn't consider crawl control necessary unless you are doing some serious off roading, think "fins and...