Taking Out The Dash

Hi All,
I'm the Dad. We're getting the car back from paint on Monday, I'd like to have the windshield in and start putting it together. The thought of pulling the dash out and going through that scares me. We still have to put the trim on, the interior in, the engine in, gas tank / fuel cell in, go through suspension............ It seems like we have about 3000 parts to put on the car together as it is. Is there any real benifet to pulling the dash???? I'm thinking we can get at or clean what we need to without pulling it. Thanks everyone for your input on this and other items!!
Glenn