What you have in the bank is irrelevant, it's how far down the development road that money will take you that counts.

That's a calculation only you can do with your current living costs in addition to estimated cost of equipment, services, software, office space, and probably lots of other things you would never imagine (legal costs, accounting costs, cost of incorporating for example?)

If you're asking the question then I guess you haven't done these calculations yet - but putting them all down on paper (or spreadsheet more appropriately) as well as a realistic development timeline will tell you what you need to know.

Good luck! If you never try you'll never know.