I've always relied on Kooky Grove myself. In fact, anyone that has done private runs with me will tell you, almost always I pick Kooky Grove. Rarely people there and even when there are people, it's very few. Almost to the point that it's the one place I've ever been able to go when it seems all other districts are unfitting.
As for an alternate, there are 3 other Kooky's, with Kooky Grove being the only one with a space in the name.
There are also a total of 3 districts with "Grove" as the second part of the name. Crazy Grove, Giggly Grove and Kooky Grove (of course). Could always start with one of them, and then the other 2 be backup districts.
Either way, the backup districts would be easy to remember, with the "Grove" idea being harder to figure out, so smart annoying randoms can't easily follow.
P.S. I'm sure Trish was thinking, "How long before Wolfie mentions Kooky Grove..."
