I've just competed this job on a 3000 and you don't take the bonnet off, or use the engine hoist. Get two metal bars, I used 1" sq tubing a little narrower than the width of the bonnet. Drill two holes in each to match up with the studs that hold on the valve gear. With the valve gear removed, bolt on the two bars and with a helper on the other side of the car, lift off the head. You can put it back the same way. I have used this method on several cars with heavy cylinder heads.
On a side note, make sure all the nuts and threads are clean and that they don't bind up, and make sure you have the correct heavy,,, thicker washers under the nuts. You should remove the studs from the block to aid cleaning the surface, screw them back in and just tighten them a little, no need to go crazy, or you can crack the block, the ones on the front and rear are the easiest to crack.
Good luck