You should be able to obtain a 3.5%-5% down on an FHA loan from lenders in the area. In regards to your current monetary situation, I wouldn't necessarily count on the $5k raise (you never know what will happen or will not happen). I would look into what you are spending your money on currently and see what you could cut back on. I would also see if there are any other jobs out there at different companies. I think in general, that is probably the fastest way to gain a pay raise, at the very least, you get experience interviewing and that isn't a bad thing. If moving companies is out of the equation, take a peek into what you are spending your money on each month and what you can cut back on. Retaining the dollars that you have already made is always a good option.
I think Nicholas is right in the above post though, you want to make sure that your buy doesn't completely wipe you because there are always the chances that something will come up or you have a vacancy.
Best of luck
