Stock wheel weight and offset

Im looking into getting a nice set of wheels and tires for my 2015 900s. My rear tires are pretty much gone so its about that time. I’d like to keep things as close to stock as possible as far as offset and weight. I almost pulled the trigger on a set of Sti hd6’s (in red) mounted on rocktane hd’s. Wheels look awesome but noticed they’re 15 lbs each. Does anyone know the weight of a stock 12 inch wheel? (The sti’s are 14 inch) The tires are the same size so I don’t think that would change anything weight wise, and hopefully not size wise. I hate the idea of adding a bunch of weight to have nicer wheels.

Also those wheels are a 4+3 offset, which to my understanding would add about 2 inches to the overall width of the rzr? The whole offset thing still confuses me.. I have super choks mounted to my trailer which I had to fab up some things on the bottom of the trailer to make work. I’d rather not have to re do all that to widen the rzr, which I’d rather not do anyhow.

Am I just spinning my wheels here, should I just throw some new tires on the boring old stock wheels or is there a way to have some nice light weight after market wheels while keeping weight and offset close to stock? Thanks for any input.