Considering I've only had my license now for about seven months and I now own Five Bikes. one being a major project bike yeah I think I've caught the riding bug quite seriously.It will be just fine! Change oil and clear out cylinders as advised.
Get the leak sorted but bear in mind that you might still have problem with float cut off valves.
This is a common problem and easily sorted but may take a few attempts.
It is one of the joys of biking and once you have cracked it you have tens of thousands of happy riding miles ahead.