Generally the banks would want proof of salary on your bank statement and I know that some require you to have worked at your employer for a certain period (shows job stability as well as steady stream of income). The bank statement is mostly used to determine your cashflows (income vs expenditure).
Secondly, the credit rating plays a rather big role in your application as well. If you don't have a credit rating, then it's rather difficult to assess what type of client you are. I know that with micro-lending / unsecured lending, your credit rating will play a factor in determining the term (and consequently the value) of the loan that you qualify for. The credit rating will also play a role in the interest rate that they offer you.
It won't hurt to go to the banks to find out if you qualify. Just do yourself a favour and go to a couple of banks and try to get the best deal possible. You mentioned that you won't have funds for a deposit and you're also looking for 100% coverage. Perhaps try Standard Bank as they have a product specifically aimed at first time home owners, which covers all costs (transfer costs, legal fees, deposit-free etc.). The only short term drawback is that the interest rate might be prime plus (you can fight and renegotiate after 18-24 months!).
Purchasing property via a bond is a big financial obligation, so take your time in deciding on whether to purchase now or later.
Maybe also read this article, which might bring things to light that you haven't thought of:
http://www.iol.co.za/business/personal-finance/should-i-buy-or-rent-1.1551522