Im pretty much as big as you are and if you're not going to hit the park, i recommend to get something stiffer then Skunk ape.
I got a NS Legacy-R for 4 years and now i switched for Donek.
I realized that custom-made boards are not that pricey, and the fact that you can get exactly what you want makes it way better.
For my US13 and 21 -3 stance i find NS legacy hard to carve low. I got a toe drag, once i set angles like 36 18 i feel that board is flexy and i cannot carve it well.
And now, you gotta find hot you're gonna ride: freeride or park.
On my Legacy i was able (keep in mind 230lbs and 195cm) to do 360(really bad, but anyways) some simple tricks on rails like 50-50 180 out and ride freeride for sure.
Now i've ordered custon board which will be stiffer, longer and wider.
If you go for a freeride board you will be limited in
You can do it, but it'd be waaay harder.
On a park board you will be limited in:
i say you'll be limited, but you can try anyway.
If you go freeride i see no reason to get a smaller board, grab the longest stick. I know the freeride in KAzachstan and in US differs alot, but with your weight you better get a float, cause get stuck in powder really sucks.