Moving from one tank to another.

[Chowder]

Hi I will be taking my 65 gallon down and setting up a 105 gallon in a different spot in my place. I believe I can have the new tank running for about 2 weeks before I have to switch all the contents over. I do a 10-15 gallon water change on my old tank now and was thinking of using the aged water in the new tank. I was planning on setting the new tank up doing the water change and putting the change water in it. I was going to do two water changes a week to produce about 60 gallons of aged water for the 2 weeks. I would have an extra 70-80 gallons of cleaner aged water to move over from my old system the day of the move. I was going to keep the water stirring with powerheads and my new skimmer in the tank. I was also planning on using new sand and taking a pound or 2 from the old system to seed the new sand. I am using my old rock and was planning oncleaning as much as possible in the move. I also have about 50 pounds of clean dry rock cycling now for 2 weeks in a rubbermade with a 8 pound piece of live rock. So I don't know if this is a sound move or not. I am open to any suggestions to what might be better. I would also like to here any other peoples experiences with there tank swaps and moves.
Thanks, Chris