Str or Car.... Depends on who you ask. I went Car first for my PB, and went for 5'11 since it should give him better balance.
http://glb.warriorgeneral.com/game/player.pl?player_id=4372965&playoffs=0Imo, carrying first help to prevent fumbles during the early seasons. That being said the choice is yours, as long as you worry about that 2 atts you're doing it right
You could go first for the one you want higher at end build.