Ben, IMO I do think you are asking too much. I also think you should just go with a 40mm front lens unless you are going to use it for varmints. Spend as much as you can justify on getting quality glass and multi-coated lenses, and get a scope from a company that will back up their warranty. I personally do not like a Tasco for a big game rifle because I have seen several go bad. I would hate to have a hunt ruined because a scope failed.
However, only you know what you can afford, and what you really want. Good Luck

P.S. Be careful with used scopes. Most of them are being sold because somebody didn't like them. And a good one will still probably be more than your $100 dollar figure.