If you even think you might get a paid account at some point - (it is pretty cheap, honestly, I was surprised) - then you should set up an icon system now. I tried to get my stack down to like 250 today, so I wouldn't have to rehaul everything, and I couldn't do it. I couldn't part with enough icons. I'm not entirely happy with the sytem I am working on now, but trust me, you are better off to get organized early one - I am so tired of sorting icons atm, I swear.