Land Contract Help

Got a house a guy wants to buy on Land Contract. I need help with the amortization schedule. Any help appreciated.

List Price-- $87,000
Interest Rate–7.5%
Down Payment-- $2800
Monthly Payment He Wants to Pay-- $750
5 Year Term/Balloon Payment at End

He also mentioned who would like to put chunks of money down periodically every six months or so.

Thanks in Advance

There is a Real Data Calculator for free on this site. Just click the Free Books & Audios and its at the bottom of the page.
You’ll need the term in year or months though.
Whenever you get a lump sum down on the principle it changes though.
By the way most local Realty sites offer a calc. too.