Yep, moving the engine is probably the best way to get at the driver's side rear stud. Of course, I dented my firewall and can get at it any time now. LOL
For the passenger side, I actually recommend moving the whole heater core forward as it allows the side of the head to be accessed easily. It only takes about 30 mins to get it pulled forward and you don't have to evacuate the whole A/C system.
As far as getting 210+ ft-lbs of torque goes, I use a cheater bar (as we call it in the Navy) where I put a pipe over the handle of the torque wrench to get some more leverage. It works wonders let me tell you for getting the same torque to all the studs very easily.