Also scary thought, this is now *officially* my job...
This would indeed scare me.
I mean you cannot realistically expect that this will suffice to pay all your bills and food. I do have great respect for your skills and I'm sure you'll make money out of your work (I for one will buy any resonably priced indie PND).
But in today's market (where every thing is free in the mind of many), selling PC indie dont allow to pay your bill. And if your game is successfull enough than your work will just end up on the piratebay and you still wont make enough maney to live.
Our community isn't large enough to sustain your need either. You wont have the piratcy problem for Pandora (I will fight pirate f***ng hard even if I dont plan any indies, and I know for sure I wont be alone in this fight), but counting that we'll be 8000 at peak time, and counting that 10% of that pool will pay for your work (I still have pink tint glasses here, expect less than that) you can expect £1600 at most, within the whole lifetime of the game (you'll be lucky to reach £200 on release month, in fact this would be an achievement on its own...)
I always though this would be some kind of side job. You know the kind of job that allow you to pay your yearly holiday's trip.
If not, I'm scared for you.
PS: I hope I havent killed your dreams. I dont want to say it is impossible. I just want you grounded. You can still be as successfull as minecraft authors, but the odd put you in the steelstorm category (Have a talk with them. Their game is excelent, I love it. But their release have been completly hidden by the minecraft one and they got near no preorder even if the game is that good).
Make this a side job. hopefully one day, this side job will allow you to make more money than your day job and you'll switch.
Cheers,
Seb