A few KLR owners have had welding shops add a heel shifter onto the KLR pedal. But coming from Sport Bikes, you would have to 'think' about using it for awhile.
I'll ask if you wear any larger than USA size 10 boots? And how long Are Your legs, not your pant size (pants vary)?
Several people love these. Hey, they make 2 sizes now, KD Kawasaki KLR650 11-16 Menu
Notice that they not only drop down, but BACK also.
If some previous owner has added wide, toothed dirt pegs to your bike already, the forward added portion reduces the peg to pedal distance.
So have a look at these, may work best for size 13+ boots. 1987-2016 KLR650 Foot Peg Lowering Brackets
Sorry that I don't currently have much advice about hand heaters. Partly because we don't know what year of bike you are riding & what handlebars may be on it?
2007 & older Had open-ended hollow steel bars, one could install the Polly Heater inserts and use ANY handgrip of choice. Change grips anytime, no damage to heaters.
2008 & up Had threaded end-capped steel bars.
Many people install aluminum bars. Can't install the insert Polly Heaters. https://www.remotemoto.com/articles/...otorcycle-kit/
Some bikes have Bark-Buster style hand guards fitted.