Don’t even think about it!

Make sure you setup proper source control.

And don’t start writing until you’ve put in a spell-checker.

And make sure you maintain clean commenting.

And keep your design document robust and up-to-date.

And develop tools for development.

And establish a save system early.

And UI.

And Options.

And make robust and scalable object classes.

It’ll save time in the future?

And once you’ve done all that.

And you finally make a prototype.

You can find out that it’s trash.