Advice, tips, speculation please.
OP posted this when price was around $450. today it is @ $1147. that is +250% in 10 months.
first sentence in first answer nailed it:
Keep 12 BTC and wait... 
that is sadly why we all end up doing. we just turn into 100% investors who just hold bitcoin to sell at some point and take the fiat to use. and bitcoin stops being a currency if we continue this way and price will also take a big hit if this happens.
Thats what I'm doing, but many coins are circulating, even when you dont think people buy stuff with bitcoin. Casinos are great way to turn them around, some lose, others win. I personnally dont want to hit myself in the head if few years from now bitcoin rise significantly, and I spent coins on some online purchase which I could easily buy with fiat.