Dude you live in Orange County. Drive yourself up to House of Bonsai and tell them you want a $50 Chinese Elm
Or else go up to San Gabriel Nursery, pay twice as much, and get 10x the tree.
You aren't even 100% certain of the species or cultivar. Don't dive in on that tree just because you are a little impatient. Hold out and get something you KNOW you want. There is really nothing about that tree to recommend it other than the fact that, being a Chinese elm, you can do anything to it and it probably won't die
You really don't want to start with bonsai with something so straight and lacking in character; you will be battling it for years.
Buy a bonsai in haste, repent in leisure
Or at least that's what I think the saying is...