I would say a good stay and recall are imperative. It's very embarrasing trying to get a disobedient dog back when everyone is waiting for you (makes you more anxious too, which isn't good for the dog). I also would stress the importance of the dog being able to work both sides (a good trainer will insist on teaching each excersise on the left and the right.)

It's amazing what you can "rig up" from some brush shafts and upturned buckets- they make acceptable jumps. Garden canes pushed into the ground and covered with plumbers plastic pipe (available from B&Q very cheaply) over the top make good weaves (make sure there is no cane poking up. It could cause a nasty injury)

Good luck and enjoy! It's the best fun you can have with your clothes on!!