If they are serious about running 12 personnel a good amount this year, they probably really need to come out of tonight with a new TE and RB.
OJ Howard is an ok player for $3 mil this year, but he is not gonna help in the running game as much as you would like with 12 personnel and is only here for a year
Trey McBride and Rachaad White is probably the best realistic pairing I can think of.
McBride is very good at everything and White is a good receiving back with just enough to punish teams if the play light in the box