Re: Newbie !!!!
Welcome to the forum. We seem to be getting more new members from Tennessee lately. That's a good thing. Beautiful country.
Coaster brakes are okay, if, they are augmented with a decent front brake. Rim or disc brakes can be adapted. It might take a little fabrication on your part but it can and has been done many times.
You'll hear this from others too but if you haven't read this already please be careful with those fenders. They can cause you some grief if not mounted properly and reinforced.
Our search feature might offer you some help with brakes. Type in, 'Huffy 29er brakes' and see what other members have done.
Good luck, have fun and ride safe.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"