I could point you in the direction of someone who would be happy to give you all the staff you may need for this job.
Straight up guy - worked with him loads in the past and I looked at a project today for him.
I would never turn a job down, I would just find someone to sub it to or find the staff and do it myself.
You will only be able to do these jobs if you get on with them or share them with someone with more experience & staff.
Let me know
Rob