As Elizabeth said, it all depends; if might be better to rent for now. Most lease purchase deals usually wind up with buyer's overpaying - you'd be better to rent and get that credit squared away. Get with a few lenders and see what they recommend, put that 2K away and try ot build on it and look to buy once you get a green light and can qualify. I'm happy to recommend a few lenders -

Hank Miller, SRA, ABR
Associate Broker & Certified Appraiser
Prudential GA Realty
678-428-8276

That depends, you will need a realtor to help you the process. A desposit will depend on the home price and other conditions that the home owner wishes. Sometimes there is a time limit for a purchase when leasing; also depends why the home owner is selling and if they want to hold the mortgage.