I was on a budget too and finally upgrade like you did before this season I've been renting and borrowing gear.
I was looking for a board that was an all mountain board that I could ride any condition with and do some jibbing, also I'd be happy with for years so the next season/seasons I wouldn't have to upgrade.
I found some DC Phase boots for $80 2013 (My cousin had the 2014 and I liked them) just knew what I was looking for and did a google shopping search.
When sports chalet had the sale I payed $183 out the door for a 2013 Burton Process Fling V 152
Bindings are Burton Custom EST 2013 $100
I was confused with the different board shapes and how they acted.
You can check it out here they have a board sizing chart. Also some boards are different sizes for the same weight.
On Sale Snowboards - Snowboard - 40% Off Free Shipping
^not the cheapest, but they have reviews, information, ect.
Check out eBay I've seen some used boards and board sets that are used that look almost brand new.
Snowboard stuff looks kinda expensive now. Everyone's trying to get gear I guess. If you want you can wait till the season's over for sales too.
I'm no expert, but this is just my 2 cents.