I'm sure you will be rewarded for it in the future.
There are a few 3 bedroom units in the area within your price range at the moment but that doesn't help you much because I am sure they will not be available for occupancy in August, unless you decide to pay for one month in advance as I don't think they would hold them until August. However, if you email me directly I will be happy to send you further details on exactly what is available. Send to: email@example.com.
All the very best to you.
http://www.trulia.com (Rentals Section)
http://www.zillow.com (Rentals Section)
http://www.realtor.com (Rentals Section)
Between all of those, you will get a very clear picture if you can find what you are looking for. Good luck!