The 24' mast you're suggesting sounds long. Does it really need to be that long? I know you want "the higher the better", but that will only serve for your vertical. The beam is for DX'ing and the extra height won't make any difference there.
You're going to be a Tech and am
getting a beam with a 40' boom? Is that just for 10 meters? That's going to be the biggest 10 meter beam in the world. Sounds like overkill to me.
This rig is going to be a huge wind/weight load. It will not support itself at this length and you'll have to use guy wires.
I would put this monster beam on only 5 feet of mast and you'll probably need a thrust bearing unit above the rotor to support the vertical side-to-side motion. You can install the beam on the mast, and then stick it in the rotor all at once with just the 3 guys picking it up. Put the vertical somewhere else to get it higher, or live with it on the tower at the reduced height.
It doesn't matter how large or heavy duty a mast pipe is, you just don't see long masts supporting large beams. It's not done. It's too unwieldy. Most hams would put a a regular tower, use a thrust bearing above rotor, and probably like a short 5 foot mast for a beam this size.
If you get it up just as you want, oh do come back and post us some pics fer sure.