hey guys! currently working on a ship and bought a 13 rmz450. should be here next week. I'm wondering what I should buy in advance? I will be all trail and woods riding. I'm thinking a handful of oil filters, air filters, couple gallons of rotella 15w40 and I'm not sure what else. I don't know anything about air filter maintenance. I have a 07 kx450f with maybe 15 hours on it since I've had it so I've only done oil changes.. any advice on general maintenance for my type of riding would be perfect!! thanks!!