Jacob,
Believe it or not, some computer equipment is both 110 and 220 switchable. For the electronic items worth taking that are not switchable, one buys a transformer to plug the device in and then the transformer is plugged into the 220 outlet. You would probably need to buy those in Baguio since they are heavy and would cost a lot to ship.
My game plan, and it is being modified on a weekly basis, is to shed a lot of possessions thru yard sales, e-bay, some friends, and then what I can't sell, donate to a church, the Salvation Army, or something like that within the community.
This link talks about shipping containers:
http://www.philippinesboard.com/forum/shipping/404-container-shipping-phil.html
I have also read numerous horror stories about the corruption of the people on the shipping docks there in the Philippines. Stories like dock workers virtually holding the container for ransom to force you to pay some outrageous fees. Not every container, but enough that it is a frequent thing I trip across when reading various forums.
One gentleman refused to pay the extra (bribe) fee and waited a few days while he figured out what to do and when he went back, the scammers wanted about twice as much as before.
If for no other reason, I'm not using a large container but will be using balikbayan boxes only. It is my understanding that these are less likely to be inspected or hassled as well.
Good luck. --Rich--