400ex length

[cheyenne10]

We are looking for a new trailer to haul 2 400exs. Will be starting with a 250ex and a 400ex and eventually moving to 2 400ex's. What is minimum trailer length to fit 2 400's end to end? (ramp on and off from back of trailer). Willa 5x10' work? Need definite confirmation or experience. Pics would be final answer.
thanks.