Going with 26x10x12 front and 26x12x12 rear, you will get a better riding machine. It will be more stable on sideways hills and better bite in the mud and ruts. Tires and wheels are mostly preference. If you do not plan to get into serious mud then you don't need the 589's, they are a little heavier than the other tires. Super Lites, Swamp Lites, Mudlite XLs, and MST's would be the better of the choices for a descent mud tire and great trail tires. Take a look at the Swamp Fox Plus made by AMS, it is a very good tire and wears very well. I have 27x10x12 and 27x12x12 Mudlite XLs and have about 1500 miles on them (trails, mud, and alot of blacktop) and they still have 90% tread on them. I also have Highlifter XL2 wheels. They look great and are low maintenance on cleaning, wipe right off. Hope this has helped in some way. Good luck with your decisions.