RE: Alaskan hunt.
Model 94,
Nice goal. I like your style. Make sure early on that your parents agree that those dollars that you are banking are earmarked for you graduation "present" to yourself.
I can't speak to all the species you named but I can tell you that the brownie or even grizzly hunt will not fit in your $4,000 budget. I hope one of the other two will.
At 200 pounds I'd recommend the 338 as your "Alaska Gun". You're thinking mighty big early in life young feller --- good for you!
Good Luck and Good Hunting,
EKM