Hobby Demo, as I understand it, is someone that is buying for themselves or maybe just a couple of customers, a hobby demo might not do workshop or classes. If you can do this, great! Add one or two customers that might help you....wonderful!!!!!
I would recommend getting the most "bang" for your buck....shop the sales! Right now they have the 25% off stamp sale! (plus your demo discount!!!) and they have Thursday deals for one day only. These are GREAT times to buy your items! Also Sale-a-bration is coming up!!! I do find that I spend less on my own crafting by sticking with one company for my cardstock, ribbon, buttons, brads and, ink.......It all matches! I'm not stuck with a bunch of ribbon that I can't use on anything!
Whatever you decide, good luck!!! And remember to join the demo side of this board if you join!!! Lots of inspiration!!!!