First thing I would do is get it in place and filled with water. Get the S.G. right, then worry about moving stuff.
How long has your current tank been set up? How many lbs of live sand/rock do you have now? I would buy "dead" sand and seed it with your live sand. I have about 80lbs of
LR in my 75 tank, and wish I had a little more (found a way to fix that though) so make sure you get enough.
Anyways, once the temp and S.G. are good on your tank, I would add the new sand, then wait a day or two for it to clear. You'll need to cycle this tank before you add any livestock, so add your new live rock and let it cycle. When the cycle finishes, add the old pieces of live rock,
aquascape, then add your old live sand. Then move all your corals over.
As for the skimmer, I have a Coralife Super Skimmer 125, and it's really quiet. I'm going to attempt the "mesh mod" tonight when I get home from work and see if it gets louder from that. I found the Coralife skimmer for $118 online + s/h.