Hi guys. I'm looking to buy a fatbike for daily commuting. The problem is, I'm 6 foot 7 and a big guy. I'm looking at fatbikes because of their larger size and I discovered 29ers as well. Are there any 29er fatbike wheels? I think the added size would benefit me. Also, would this be worth purchasing and eventually upgrading everything, or would I be better off buying a better bike from the get go?

My daily commute would be 16 miles round trip on mostly flat pavement but sand is everywhere here.