Hi guys, looking for some opinions on a Header size for above the garage door. The Garage is a 28x32 with a 4" curb. This door will be on the 28' side, non load bearing. It's an 18x8 door. Was planning dual 18' 9" long x 11 7/8 tall LVL's back to back sitting on 1 jack stud on the floor and 2...