Know your limits
The downfall of any good business is overexpansion. Once you make one million in profits, you'll have the option of opening an office instead of making games out of your garage. With that, comes the potential for employees. With employees, comes the option of hiring professionals, or less skilled and lower paid workers. There's no strictly correct answer here, but while upgrading to a new office is a good idea, you should be wary not to employ too many people, lest you feel the wrath of loan sharks at your door...