As you say, they both look good. But you might want to consider ergonomics. A lot of us are middle-aged or so. If you are, or maybe you are younger but just not quite in fighting trim, you might want to consider how easy it will be to get in and out of your chopped car and how comfortable it will be to ride around in. I'd suggest finding someone who has already cut theirs and sit in it for a while. You might also consider that these same older and fatter guys will probably be your market if you decide to sell the car and a guy isn't going to be your customer if he can't get into it. Still, at the end, you have to build what you want or what's the point? Good luck. Let us know what you do.
You didn't say what year belair, but I have a '56 and I have wacked my head more than once getting out of my car. also I don't think that it improves the looks of mid fiftys chevys. now if it was a '49 Merc then I would possitive aggree chopping would be the only way to go. one more thought, chopping a shoe box chevy would lower the resale value at least here in south. cal