Also, don't forget to hire a sweatshop full of eager kids fresh out of high school or junior college and make them work 60-80 (or more) hour weeks for peanuts to hit those Christmas deadlines. They probably know more about the ins and outs of the third-party middleware you licensed than you do, since it's literally all they do, morning, noon, and night. Granted, this bit may be difficult on a $85,000 budget -- if you plan on hiring developers from the first world, that is. You could probably hire a team twenty strong from China or the Ukraine for less than half that money and keep them busy for a year. After which you'll have a beta with a few bugs, some of them showstoppers, but still good enough to ship as the final game while you ready a day-one patch.
I mean if we're going to regurgitate "industry best practice" into this thread, why not go whole hog?