How much handlebar riser can I get away with on an Outlander Max XT before I run into cable length problems?

Anyone have any ideas on increasing the seat height by an inch or two? On my old ATV I had 3 layers of closed cell foam sleeping pad held on by a Colman seat cover. It worked ok but I’m looking for something a little better if available.

Being tall isn’t all it’s cracked up to be sometimes.