looking to change up my shoes and rims

question for all you RZR guru’s out there, I picked my 900 trail up last night and absolutely love it, I want to customize her a little bit and want to start with tires, im looking at something like mega mehyems or something with a really aggressive tread as there is a lot of muskeg where I ride, if i want to widen my stance a bit, what type of negative offest rims would i look at getting or can i acheive a few extra inches just by buying the appropriate tires, id really like to move from the 26" to a 28" or 29"! :ok: can i manage this without a clutch kit off the hop and see how i like it? and input or suggestions would be greatly appreciated, thank you.