XL! wow!
Snowy doesn't look that tall in his pics.
the good thing on the XL frames is you're not in the most common frame size.
however, they make less of them.
The 2015 Salsa Mukluk 3 would be your sweet spot.
it's a little on the heavy side but will loose weight over time with upgrades.
You're not paying an arm and a leg for it and it's a brand that's one of the originals (at making Fatbikes)
I seriously wouldn't bother with suspension with a Fatbike (unless you live in out West of something like that)