I say go with the
kit lens, which you can pick up gently used for around $50 or so. You'll still have enough money to pick up a set of
extension tubes (cheap on eBay) and a
SMC-A 50/2 or 1.7, which will work with the extension tubes and also serve as a low light lens. Sure the SMC-A lenses are manual focus, but unless you're shooting fast moving objects, then manual focus isn't that big of a deal. KEH is good, but they can be a little pricey in comparison to buying off of eBay or the Marketplace. One good thing with the Marketplace is that you find something that you're really interested in and the price on it is just a little bit more than you want to pay for it, then you may be able to dicker with the seller and get the price down to where you want it.
Later on, when you get some more money, you have several good choices in the way of telephoto zooms--the DA 50-200, Tamron 70-300, Sigma 70-300 APO, & F70-210 which can be all be had used for under $200, usually in the neighborhood of $150.
I generally don't see much in the way of extension tubes on the Marketplace, but I do see manual 50s and 18-55 kit lenses on there fairly regularly, so keep an eye out for a good deal.
HTH,
Heather