Mast will be closer to 500 lbs than 1000, but you may need to pull more than 1000 lbs to break it loose from the step. The 5/8 line is fine-- make one bowline loop around the mast above the balance point, and another bowline loop on the tail to hook on the crane, then secure the bottom to the gooseneck, vang or other heavy fitting. I typically lift
from the aft side of the mast. I would let the bottom fitting rather than the spreaders take the lifting load. If the mast doesn't pop out, be patient, and have the crane operator wiggle it a bit from side to side. As mentioned, pad the hook, and be prepared to put a pad under the butt of the mast when the crane starts to lay it down.