Im looking to buy bitcoins ...
PayPal
...
Just saying,
if you're honest and looking to buy bitcoins with PayPal (in a scripted-, webservice-way like that), you risk losing access to your PayPal-Account,
if you're dishonest everyone else risks their bitcoins.
Plain and simple: Bitcoin and PayPal don't match well, either you, or your customers will sooner or later lose money..