Hey,
So how big is your Kenyan, how many do you have?
I keep a pair or trio in a 600 wide x 600 deep x 400 high cage.
for a single snake or pair, a 900 wide x 400 deep is fine, go for wood, glass is not great as KSB do not hibernate and the coldness of the glass in winder can cause respiratory infections
hope this helps
“Nobody made a greater mistake than he who did nothing because he could only do a little”
Edmund Burke