QUOTE(Donal78 @ Nov 3 2006, 12:19 PM)

To be honest no. I have moved so much in the last few years we just want somewhere to call home.
I can appreciate that as well, but committing to paying $300k should be looked at from an investment standpoint as well.
I am speaking from my own perspective away from my profession: I and several friends have dabbled in the investing side of RE and I can tell you that if you don't have every single one of your bases covered, then you're going to be wasting money.
You don't have a down payment, but you're going to spend money renting for 4 mos...all the while not a penny is being credited. Usually, again from my own experience as an investor, you should be getting some sort of credit towards something. That's what rent-to-own means.
Before you agreed upon a price, did you get the property inspected? Get an appraisal? Speak with an agent to see if there's any other properties around that are comparable? Have you spoken with a lender to see if you qualify for any mortgage, so the seller doesn't need to hold a note at all? What rate is the seller charging you? Any prepayment penalties? What if the property market slows down, and 4 mos from now, your agreed upon price is overmarket? Is there a balloon payment at the end? Have you locked seller into an agreement with price and terms? Have you checked the condo bylaws that subletting is permitted? What else does the HOA by laws say?
Honestly, there are so many factors involved, I'd just say to make sure you know what you're getting into. Nothing more, nothing less.