It's my #1 recommendation. Keep to a platform you are familiar. ESPECIALLY if you pickup a started project. I am on an E-body project. But I'm familiar with A&B. (In fact. I often go look to see how the A&B has setup.) But if this let's say a Mustang project? I would be in the Ford chat rooms whining "Why the hell did they do that? And what the hell is this?"