Your rigger should be able to advise you on that. I've done it last autumn to renew the standing rigging, and the marina insisted on having a professional rigger for insurance reasons. Didn't seem to matter who did the actual work as long as he was present - nobody chased me off and I winched him up and carefully guided my furler all the way to the trestles.
Things you can do before is spray the turnbuckles with release agent and make sure they all turn freely. Also clear all your running rigging from the turning blocks at the mast foot and take it back to the mast or remove for washing (leave mouse lines and make sure they're tied on properly). Tie it all up well, just hanging it on a cleat won't do because the cleat will soon be horizontal. You don't want it falling off during craning and getting tangled somewhere. Don't use duct tape, it'll harden in the sun and you'll spend hours scraping the glue off the mast later. Don't ask me how I know this
Oh, important, leave one halyard to winch the rigger up the mast.
Then, on the day, which should be fairly calm (we had to postpone it twice because it was gusting too much), take the split pins out and loosen the shrouds. You can undo the lower shrouds completely if you want, but leave slight tension on the cap shrouds just so the mast doesn't wobble when the rigger climbs up.
The rigger then went up the mast to install the sling for the crane, and a key part of that is having a very good guess where the center of gravity for the mast incl. rigging is. If it's top-heavy, it will invert, slip out and you'll be sad.
Then the crane lifts the mast just enough to take the weight, while you undo all the remaining standing rigging and take it back to the mast to tie on as it lifts off. The forestay with the furling foil must not be bent, so it'll require careful manual guiding all along the way.
Finally, the mast gets tilted horizontal and put somewhere (ideally on some trestles so you can work on it, even if it's just for giving it a good scrub). The horizontal tilt is the other reason the center of gravity for the sling must be found - if not, you'll have to readjust the sling, which can be precarious.
Your rigger should be able to tell you all of this beforehand, as mine did. Talk to him, he may prefer to do things differently from mine!
Edit: Forgot to mention one bit - disconnect the mast wiring. Mine was joined just below the mast step inside the ceiling panels and once photographed and disconnected it pulled clear of the cable glands easily. Stuff it into a sturdy plastic bag and seal it as well as you can (but again, don't use duct tape on the mast), then tie it on the mast too.
