Be careful what you take on. I had a chance 2 years ago to bid a large wall for a new applebee's. This wall was about 300' long going to as high as 55' in some places. I have a lot of experience also but i felt that is wasent for me. Some times big jobs are for big boys and i will admit im not. This was one that there was a deadline so the store could open, i dont like to be rushed. They ended up getting a mexican crew to do the job and it looked like they did a pretty good job. I had an older guy that was my mentor told me once some times big jobs dont always work out. You might stand back and say i built that wall but i didnt make money. Im not trying to discourage you but i would look at all of the negative sides first. Will you be able to pull draws?