A. I second **********'s suggestion

B. You have listed some pretty good bikes there, and some not-so-good ones. First off, the Huffy you linked to does not have 7 speeds, it looks like a simple coaster brake: you brake by pressing backwards on the pedals (backpedalling). If this is your style, go for it, as long as you don't have to go down a lot of hills (heat buildup due to friction). Also, as a general rule, Huffys and other big-box store bikes don't come in different sizes, and if you're 6'2" you're going to need a very large frame.
The Schwinn is somewhat nicer, and coming with fenders and a rear rack is a plus in my book, since those can cost $50 or more bought separately. Unfortunately, it looks like it only comes in small/medium sizes (real men don't ride Schwinns??), so it won't fit you.
Even if you don't have the money now, I'd recommend going to some bike shops in the interim and trying out different styles, you'll get a better feel for what sizes and components you need. Most bike shops carry several different brands, and you'll be able to see a lot of bikes side-by-side.
If you like bikes with that older styling, look to see if anyone in your area sells Electra bikes, they might have something right up your alley.