As far as designer rates go check out USA's website
http://www.usa829.org/ and find a
theatre of your size and budget and look up the rate. To figure out techs you need to think of the cost of living and what benifits you will be offerning $20 get a decent tech in the middle of no where with a full benifit package but take that figure to NYC or Chicago and you won't be able to get anyone with more than a few years experince.