I seriously doubt you can change the avatar. It's a professional artist that creates it. Maybe you can modify it if you think it sucks. From what I've seen so far, it doesn't look like it takes much longer than 5 minutes for any of them.
I'd go for the 46" LCD TV for 365,000. Already have one? Get one for me! There's a fleece zip up hoody for just 9500 or that nice velour bathrobe for 11,000. You can get a massive 30" monitor for 300,000 - or a nice, modest 24" for just 91,000. I got their 500 chip set for 14,700 - not the lacquer highest quality like Poker Stars offers, but still nice, and for a lot fewer points. I like the octagonal poker table top for a measly 18,000.
At least 1 year for a Cooper? Are you doing 1,000,000 a quarter? Anyway, I'd skip the avatar, unless you think it'll help you at the tables. I can guarantee you one thing, your hits on Sharkscope
and such would go through the roof.