With 30% down, you've a greater chance of buying this property! However, your journey to becoming a home owner has just begun! There are many more questions and facts to be considered. For example:
What is the value of this property?
What is the asking price?
Is there room for negotiation?
Is the process time consuming?
How much stress is involved?
Have you been pre- qualified?
What is your income, etc.
I would recommend you engage the service of a real estate professional to guide you through the process. You may start right here on Trulia by selecting 3 or more to be interviewed. The best should be hired for the position. Do background and referral checks.