Help with offset and overall width 2004 Sportsman

I have a 2004 Sportsman 700 EFI with the stock plain steel wheels and I’m looking for new wheels. I want to put on the Maxxis Bighorns with a 26x9x12 in front and 26x12x12 in back. Looks like most all wheels are 4 + 3 offset. right now my overall width is 45" in front and 49" in the rear. Can anybody who is running a similar setup on a similar machine tel me what your width is. I looked and can not find any data on what the offset of these stock wheels is. I cannot be any wider than 50" to be able to ride on a lot of trails I go on. I searched but couldn’t find anything conclusive.