I think you'll be ok for remote steering but not so sure if power tilt and trim is available on outboards until you get about 40hp ish? You should be able to find a roller trailer though for that size rib.
What are you going to use the rib for? that will give us a better idea of what to recommend, also what sort of colours? Is a orange and grey rib out of the question?
Can the rib be bigger than 3.2m or is it going to be a tender? It's just that a 4m rib is absolutely no trouble to launch and recover etc and a much nicer ride too.
Hope that helps.