I have been in a Zodiac Pro 3 a number of times and its fine as a small rib for small chop for 2 people.
With more than 3 people in it, its a bit of a squeeze, but still a useable 4 person boat at a pinch for short distances.
I wouldn't want to take it out in anything too large, however the ride was considerably dryer than I get out of my current 5.05m Gemini... The one I was in only had a bench seat and a plastic helm seat and this was bloody uncomfortable in chop...
My only comment would be that are u sure you want a sub 5m rib?
I am now looking to upgrade my 5.05m to a 6.5m as I'd like a little more room. As you start to want to do longer distances, maybe take a few friends out, store a wakeboard, picnic basket, lifejackets etc... you may find you want some extra space...
I also note a 5.5m Avon for sale for a little more on boatsandoutboards.com and a 4m for a little less, - I would shop around for a while, I think you may be able to get a better deal/more of a boat at around the 5k mark...
__________________
|