At the risk of giving unwanted advice, I'd also just add that it will be easier to know what resources to purchase once you've actually been learning the languages for about a year or so. It can be tempting to buy a bunch of stuff now to make sure you're ready, but it can also be fruitful to wait a year till you see how you're using languages, what resources professors recommend, etc.
Very true and very good advice. My professor suggested that as well. He said it can be fun an zealous to purchase new stuff, but I shouldn't go overboard until I better learn the languages so I know what to purchase.