First, take some time and go to the intro section. There are a lot of people wiht knowledge here that will be happy to help. But... We like to know about you.
Now as for your questions:
The key to all of this is the funding source. If the source is the feds, you will be required to pay the fed rate and so forth.
My problem, is if you are a contractor and have bid a job, they are generally very specific about the rules you will be working under. I guess, ask the contact that is on the bid form if you have further questions.:thumbsup: