Kirk,
Just me talkin, but I wouldn't wait on the oil change. I'm a big believer in the idea that you can't change your oil too often. With a new engine breakin, you have alot of machine parts meshing together, and tiny metal particles are circulating around in the engine. Not good.
I probably rate on the fanatical side, but during my breakin period, I changed the oil at 100 mile intervals until I hit the 600 mile mark. Each time there were tiny metal flakes in the oil. After 600 miles, I changed at 1000 miles, and each 1000 miles thereafter. Filter was changed each time too. I know it's probably overkill, but my uncle was an auto mechanic his whole life. He ran his cars forever, and the single greatest thing he always said a person could do for their car was change the oil and filter.
As for the valves, that could probably wait. However, with a Clymers and this forum, even I was able to do it. It took me about four hours, but I think I could do it in less than half the time now.
Oh, and definately go with the 20W50 oil. Don't get us started on which kind!
Just make sure it DOESN"T say "Energy Conserving" on the back label.
Enjoy your ride, and
Ride safe,
Jay