hmmmn, seths would be fine, but yr kinda in between sizes, unless you wanna spend more time charging hard, then 189. if u want it for just chillin, bit of park, bit of freeride, then 179 is fine.
in terms of other options, there are more all mountain fatties than fat all-americans, so:
Vokl Bridge 177/185
Rossi Scratch BC/Brigade 178/185
Dynastar Big Trouble 176/186
4frnt MSP 180/187
Armada ARV 175/185
Salomon Gun (I believe there's a 180/182ish for next year)
Line Chronic Blend (179 I think)
I'm sure there's more, but any of these would work well.
Yeah for next season they will but if the graphics matter that much to you then you could look into getting a pair of the 07 ones. Some shops may still have they at a cheaper price. I have the 175s and I'm about the same height and weight as you and I love em. They do well in the park and everywhere else.