Get a lift up to the Goatfarm early on in the morning (too hot otherwise) and rack what vert you can on our little bump. It's such a little hill I can't believe people whine about pushing up it! Since the new DH course went in for the States, it's a reasonably entertaining spot and it's close to the city so Mum shouldn't mind the drive! It'll be tough given the time of year you'll be in town, but try and hit it up on a day just after some rain. It's a dustbowl in the dry. For the same reason, Gunjin is a bit of a drag unless you're running 2.7s at 5psi and are packing a snatch strap! Or, maybe try it on a camel.
Might see you on a hill when you get here - look out for the blinged out DH Comp.