I have a 2009 F150 5.4 4x4 and I am looking at renting a uhaul trailer to move some smaller furniture (nightstands, chairs, coffee table, etc...). Would I be ok getting a 4'x8' or should I go for the 5'x8'? Will I have any issues towing one behind my F150? Any other tips or suggestions with your experience with uhauls? Thanks!