Hello, this is my first time here so please bear with me. I just recently built a small workshop off from the side of my house and hope to be building my first ukulele in it soon which will be given to my grandson. This shop use to be a car port, I left the roof and enclosed it all in, and so far it's turned out pretty good for a weekend warrior. It's 10 feet wide and 20 feet long and I'm hoping to add drywall to my ceiling which is framed in 2 x 4's, a contractor friend told me it would be adequate framing with 2 x 4's, just wanting some second opinions. Thank you!