5 isn’t remotely doable in a Focus.
Let’s look at passenger space for the Transit at 15 passengers vs. the Focus at 4, shall we?
Focus room per passenger / row
headroom: 38.3" / 38"
shoulder room: 27.8" / 26.3"
hip space: 26.95" / 26.4"
legroom : not listed / 33.2"
Transit room per passenger