Age discrimination is illegal. A bank can not refuse to give you a loan just because you are past 18.
The biggest thing to worry about is your income. Make sure that you can comfortably pay for any mortgage (with taxes and that horribly expensive wind insurance) and still be well off financially. You may have some repairs come up soon, you will have some repairs come up later. Make sure you can afford to pay when they do happen.
Florida has 48% or mortgages underwater now. That means almost half of those who have a mortgage owe more than the house is worth. That is a prescription for more foreclosures to come (through 2012) brining lower prices. Depending on your price point buying now and getting the free $8k (up to 10% of purchase price of the house) and low interest around 5% (at 6% or 7% you lose 11.9% and 23.9% of buying power) buying now may be your best bet. Waiting may be. If you decide to buy now know that the house must be under contract by april 30.
Maybe the best question for you to ask is does renting make more financial sense than buying does.
That does not say which way to go. It only shows you how to honestly look at the numbers and decide.
One thing I would look for would be single story living. Wide doors would be a big help if in a few years you need to get around with a walker.
I have several blogs below that relate to buying a house. They cover everything from saving up for a down payment, to the steps involved in buying a house, to things to watch out for when buying a house. 12 blogs all told and all but 2 are worth reading for someone trying to (or wanting to) buy a house.