Mandolin Bros. sells new and used stuff in your price range. Guild F-30 fits your size requirements as do some Martinsand Taylors. Your price for those instruments may limit you to used guitars and then its a matter of condition. Something new, look at Seagulls and Takomas maybe even Takamines. Take someone along who has played along time and don't buy the first guitar you play. Try LOTS OF THEM!

Don