No, don't fake it. The reality is, investors know you are starting out. It's not a problem to write checks. All you need is a business account. Yes, make the pay stubs but they can be made on a typewriter.

Just don't fake it. Don't fake anything. Don't sell products that don't exist. Don't lie to your employees about your financial state (I see this happen a lot because people are ashamed to admit that the company is having troubles... this is a bad strategy). Don't lie about the state of the product (something that happens when people are naive enough to not realize how much testing is needed.)