That's beyond overkill. The manual calls for an oil change(in 1985) every 7500 miles. When I drained the oil at around 7k, it was only a dirty brown...nowhere near black.
Super frequent oil changes will have absolutely zero benefit to the motor. At 1k, the additives and viscosity will have barely begun to degrade and you're just wasting perfectly good oil. While I realize people have an "only the best" mentality towards their bikes, this is one area where it's just a pure and simple waste of money. My rule of thumb is when neutral starts getting tough to find, it's time for an oil change (clutch is dragging more). Usually around 6-7k miles.
Whatever oil you want as long as it's not "energy conserving" or "high mileage". Bad for your clutch.
Whatever filter you want. Couldn't matter less. I like to stick a few powerful magnets to the filter, they'll catch any metallic gremlins floating around.
Make sure to put a dab of oil on the new filter's gasket to prevent it from sticking later. Give it like 1/4 turn after it bottoms....no need to go nuts tightening it. Just makes it harder to get off later.
You can order online, but really, the discount will be eaten up by shipping costs, and oil and filters are so readily available in "brick and mortar" establishments it's not worth paying for shipping, then waiting. Find a Pepboys or Advance...both carry motorcycle filters. The autozone near me doesn't.
With a filter change, mine takes a bit over 5 quarts to get it up to the top hash mark on the sight glass. Drain, change filter, add 3qts. Start the bike up and let it run for like 10 seconds. Shut it off, wait a couple min, then add oil until it's to the top line of the sight glass....NOT all the way up it. Overfilling can cause your airbox to become full of oil. I buy the 5qt jugs of RotellaT.