TV mounting Question

I have a less than ideal stud layout on the wall I am mounting my tv on. The studs are 24" apart and unfortunately there is not one in the center of the wall. This layout makes its practically impossible to get the tv aligned with the center of the wall while screwing the bracket into studs on each end.

My question, is it secure enough to mount the bracket with lag screws into only one stud and then using 4 other drywall anchors with screws to get the bracket into the correct spot on the wall. TV is 55 pounds. I would obviously use anchors that support over 50 pounds each.

Thank you.