CHURCH STEEPLE

The company I work for is bidding work on a church steeple. We roofed the church 2 years ago as new construction, and now they think they have enough money to put this steeple up. I and another lucky stiff will be the ones to sheath and roof it while this is still on the ground. Right now it is laying on it's side, they will be bringing a crane out to stand it up and secure it with guy wires until it's roofed. The decking will be 1/2" osb and fastened with screws. The shingles are legacy six nailed and hand sealed. The base of the steeple is 14' across and 56' in height and goes up to a point. With waste it's about 15 sq. I want to cma on this because when this thing is mounted on the church it's gonna be over 120' in the air and i damm sure don't wanna go back on it from shingles blowing off. My boss says $150 sq for labor, i say $200 AND MAYBE THATS NOT ENOUGH. :( We get $25 A SQ for 4/12 to 6/12 and $5.00 a sq for every 2 pitchs after that up to a 12/12. this is piece price. Do you think i'am out of line here? All this work will be done off a man lift.>>>