It shouldn't be that hard, I always leave everthing I can bolted to the intake and just unplug the harness. Take the drain plugs out of each sid eof the block to get the antifreeze out of the intake so none goes in the motor. Then buy some petcocks from a parts store to replace them with, it will make it much easier to drain it next time. I have ported heads and intake and use the stock replacemnt Fel-Pro intake gasket, it works fine. If you leave everthing together you will need some swivel sockets or a universal joint to get it torqued down again. I *think* the only part I have to pull off of the intake itself is the EGR valve so I can torque the bolt behind it. That's all I can think of right now, someone else may chime in with some other tips.
Doug J