I have a Never Summer and a Unity - I love both boards. Nothing wrong with Burton - I just think you pay more for the name than for the gear (though I do have a couple pairs of their pants). Checkout TechNine and ThirtyTwo for boots and bindings... also Drake/Northwave, and my wife has Salomon boots that are really nice - I tried on the men's of the same line and really liked them (just didn't need new ones at the time).
If you're going to ride mostly in the midwest and you're between board lengths, I'd go a little shorter... not super short or anything, but I think shorter boards are easier to control for beginners on less-than-ideal snow. To give you an idea, I'm 6'1" and ride a 156 (my NS) most of the time in the midwest, but it's a little short if I'm out in CO/Tahoe/etc, so I picked up the Unity (which is around a 165... can't remember exactly).
Most importantly - don't get discouraged! First day is rough for sure, but you'll catch on quick. I had my wife going down blues in CO on her 2nd day and by the end of the day she was making it down blacks (albeit slowly). Hang in there and you'll be cruising down the runs in no time!