Ok, so after one batch, I wasn't happy with the temp stratification I was getting on a 10 gallon batch with the chiller coils. Since I'm going to do a 15 gallon batch next time, it's only going to be worse. So I here's how I fixed the problem:
First, cut the weld for the top line free
Stretch! (and cut the excess line off)
And now it runs much higher, so I shouldn't have a warm layer on top.
I still need to reweld or solder the top fitting, but should have that done shortly.