Since cat food is not the best thing to give to your gliders because their teeth are not meant for chewing hard food, they're mouth are meant for sucking the moisture and vitamins out of soft foods.
Also, with the diet provided above it's very easy to accidentally feed an unbalanced diet with improper Ca
h ratios if you don't know what you're doing.
I thought I'd provide this link to a list of "approved" diets:
They're all properly balanced. My personal recommendation would be the HPW(high protein wombaroo) diet. It's 100% balanned, easy to make, and is was most breeders use because of how great it is.