FOH

Hello all, I'm looking to buy a 99 Forester L (113,000 miles) that I'm told needs a head gasket. It runs great and seems well taken care of, but there is a small oil leak that drips onto the exhaust manifold, it doesn't "burn" oil, but once the oil hits the manifold you get that wonderful burning oil smell. Basically, its from a small dealer whom I trust, and its priced below book ($4500) what I want to know is, do you think its worth it? I'm thinking that when I have the head gasket done, I'll do the timing chain, oil pump seal etc, because the engine is already pulled. I estimate the cost of the head gasket and timing chain plus labor to be around $1000, do you think thats realistic? I'm new to Subarus but have been lusting for awhile... I think this COULD be the deal I've been waiting for. Thanks for your advice.