The Best Converter solar kit looks like a reasonably good one. Just be aware that their hype is a little over done. Two 150W panels doesn't quite add up to 320W and I don't know where you are going to get "6-7 hours of optimal sun" without a tracking system. Plan on 4-5 hours and you won't be disappointed.
That inverter is a "modified sine wave" unit (i.e. square wave) and may not work with a microwave or other electronic gadgets. I would recommend a true sine wave inverter. It will cost a bit more but will work for anything you might plug into it.
We mounted an AM Solar kit on my sister's van conversion a couple of years ago. It used the 3M tape and is holding up just fine. If you clean the surfaces well with alcohol that tape will never let go. It is used to hold the aluminum skin on busses and horse trailers, among other things. Good stuff.