Need advice for ski upgrade for sno sport

C&A mini skis are the absolute best way to go IMO. they are awesome and give better floatation, not to mention a huge weight savings. You will custom mounts though. A few guys sell them and I will be selling them very shortly for a great price. Aircraft grade aluminum mounts, machined. Or you can find someone online selling them.
snoscoot.com has the ski's and mounts in a package but in my opinion they are overpriced and im not a fan of their mounts. however they have great service and very friendly people with great shipping.

I went with a set of Kimpex ... not overly expensive, light, good floatation but not too big, handle great, and a couple of colour options. tried the uniski version on the second sport but they weren't nearly as nice so I swapped them out for another set of the Kimpex. I cut apart the stock skis for the mount and raised it up about 1.5" ... works great!
Whichevere plastic ski you use it will make a huge difference as there is so much less drag compared to the steel skis which hold the wet snow.