Hey there,
So, I am the best freelancer for this project, because I do this every single day. I get up, brush my teeth, eat some toast, and I am gone. Lost in a world of noise. I run a home-studio in my loft, and I work on sound 24:7, so I can get your project delivered ASAP.
By finding out exactly what you want, I can deliver the right sounds, straight away. And then added to this, I know how to choose my gear.
I may be pushing in at the top of the budget range, but thats because you will be getting individual quality, interesting sounds, that fit.
Cheers,
Duncan