Wow, Comet, that's awesome news, the guy is going to hand pick your fish for you! I love that PR work he is doing already! When I bought fish on Ebay, I bought specific fish, one at a time, so knowing he will hand pick them for you is awesome. Yes, I didn't even think that local places won't have any new fish in at this time of year, at least not what you are wanting. I've never seen anything that I liked in the way of koi at any of the big pet stores, but my local store sometimes gets some pretty ones. Usually, they buy the cheapest, which are the culls (IMO anyhow) that really are blah! If I'm going to pay that kind of money for a koi, I want it to be pretty! That's why I went with Ebay. I got my fish in December 4 years ago, and they stayed in my basement in a kiddie pool that I had set up for them. One fish jumped out ... twice!!! ... but I found it soon enough to get it back into the water both times, and it survived. It was so much fun to feed them all winter long.
Can't wait to watch your pond evolve over the coming months. It's great that you don't HAVE to do anything with it for a while, as your house gets finished, but if you feel the need to ponder and relax, you can go sit out there and enjoy the fish, and think about how you want to make it eventually. Wonderful!