Pitbull tires on XMR 1000

I have a 2016 XMR 1000 and ride mostly mountain trails, some snow, rock, and a mudhole here or there. After reading up on tires I think I’m going to switch to the pitbull Growler 2.5’s, silverbacks don’t appear to be the best choice for my type of riding.

With these tires should I get the same 30" size as the stock silverbacks? Next largest size is a 27".

If I go with the 30", they only come in 30-10-14’s. Would it matter if they’re 10" wide instead of the stock 9"? Would they fit on stock rims? And would they still handle well not going with a Skinny-Wide setup?

Thanks for any help I can get.