Proceed with caution !!! I started the same as you. 1 Mosin (got mine at Gander Mtn for same price you paid). Since then I decided I needed a C&R license and the rest is $$ history.
By the way, I think you got a good deal on that 91/30. Might be cheaper online, but after shipping the cost is about the same (if you have a C&R license, more if you don't), and you don't get the advantage of looking it over first. I've been watching all the Mosins at gun shows lately and they are all over $100 now in VA. Usually about $110 and they have cosmo on them too, making it hard to see the bore sometimes. Used to be about $70 for the longest time.
Give us a range report when you can...
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