I'm currently paid 100% in Bitcoin through bitwage.co. I pay for as much as I can using bitcoins.
I think you are relying too heavily on bitwage.co. Most employers need a certain amount of notice in order to change where your direct deposit payment is sent to, so if/when bitwage.co runs into problems and/or turns into the next gox, you could potentially have two, or maybe even three pay periods worth of money sent to them depending on how quickly you can see they are having problems.
I think it is good to use/spend your bitcoin as much as you can, however I don't think it is smart to entrust a third party with so much of your money as you are doing.
I actively sell bitcoins on localbitcoins so I usually have plenty of cash for buying food and paying rent.
Our of curiosity, when you sell on LBC, are you able to get above market rates, or do you need to lose some amount to liquidity providers?