Another wheels and tire question

I’m trying to pick which wheels I want for the sportsman XP 1000 that I don’t have yet,I have $6000 down on it right now and will send the rest to the dealer in a month. I decided I’m going with Kenda executioner tires,so now I’m looking at wheels. I’m liking the sti hd6 wheels and I see I can get 14"x7" 4+3 offset but I could get the rears in 14"x9" with a 5+4. Would that work or should I stay with the 14×7 at all 4 corners. The tires are going to be 28/9/14" front and 28/11/14" rears.