The sticker in the bedroom of my Eagle was about 1-1/2" higher than the actual backer board. It's best to use a stud finder to locate the edges, then mark it with a pencil. Follow the directions for the mount, and mount it per their instructions. As to the type of mount, that depends on the T.V., its weight, the angle from which you'll be viewing, and the amount of space you have. An LCD will need to be viewed pretty much straight on, so you'll want one that pivots (or has a pivoting arm). But, you'll need extra room for the pivoting arm and the TV to be tied down during travel. An LED can be viewed from a wider angle without the picture being distorted or washed out, so you may just need a flat mount. LED's are also the lightest weight. All the big box stores (electronics, hardware, house ware, will carry them - and for a TT Bedroom sized TV, they're not very expensive. Go in and browse. Read the info on the boxes . . . they'll tell you what size TV they'll support and what they'll do.
2013 Eagle 266RKS
2011 Ford F-150 w/3.5L Ecoboost & H.D. Tow Package