August is probably a bit too far away for someone to commit to a cut down rate (it normally takes around that time to build up a portfolio or decide it's not working out). It might be worth asking friends and family to consider starting up a new hobby . Companies also offer edit only services, which may be a route to explore.
However, if you do decide to go with a videographer "proper", you'll need to make that decision now - the good get booked up far in advance! Out of interest, how low is your budget for video?