The owner's manual for your coach (link here
) lists the slide out operation procedures, starting on page 126.
On page 127, there's this note:
NOTE: Slide-out room operation should be performed with a full air suspension system.
It's been repeated often on iRV2 that Monaco designed the slides to be extended with their coaches at ride height (both diesel and gas coaches, by the way), then leveled. The procedure in the 2001 Windsor manual appears to follow this "typical" sequence. You need to confirm for yourself, though, what the manual says. Definitely don't take my word for it!
On an different topic, you should add a "signature" to your profile. It contains whatever info you want; most people put info about their coach there, so they don't have to type it into each message. Instructions for adding a signature are here