my word, it is quite an undertaking! i joined up and got started on an ODST suit in june of last year, with the intention of going to the release of Halo 3: ODST in it. i managed to get everything, including getting the visor from link, by september 15th. of course, i'd only be working on it every other day for a few hours at a time. so, theoretically, it is possible. if you buckle down, and follow all the newer tutorials, it should be a lot easier. i didn't even find out about mudglassing until after i finished my second suit! so, you'll have a huge one-up on it. good luck.
PS: it's totally worth it! everyone was so excited to see an ODST at the gamestop! i didn't even pick up my copy until the next day, cause it was so busy!!! got to pose in photos, shoot the breeze with casual fans, and get appreciative stares from the hardcore players who love the story.. Do It!!!