Why don't you see if some fellow reefers have some space to hold them for you during this transition.
I have open space in a 29g with a single 175w MH. It was supposed to be a dedicated QT tank but it's kind of migrated to a tank with a couple pieces of rock and coral in it.
Actually i very much second and third this suggestion based on my experience. Jesse - rememember my temporary rubbermaid tanks I setup during my recent move? well, it just didn't fit the bill. I lost about 15 frags/small colonies within a week and a half time and I tried to mirror the actual tank conditions as close as possible, but obviously something wasn't right (dont' know if the flow wasn't adequate, or the skimming wasn't adequate, or the light wasn't adequate, or the containers leached chemicals, or what). Several others started to STN, which is what sparked me to move everything to my new tank as soon as I did. If I had to do it over again, I would've farmed out as much of the corals and as I could before hand. In hindsight, this would've been a better route for me to go.
that said, this is just my experience. I know others who have had good luck keeping their corals in like one of those big kiddie pools for a while.
I really like James suggestion of seeing if you can find some room in other people's tanks as a holding ground until your new one is up. in addition to James's 29g, I'll also make my tank available to you as long as you don't have any nasty buggies
. I've got a fair amount of room in the back and we can build a little frag rack or something to hold them all.
Or... if you prefer, maybe break the current tank down, and set it all up in someone's garage or something.
let me know if I can help.