Urggh. easy Tiger!
Wel it int a rib so we won't know much about it. But it could be the most wonderful thing on the water so give it a test drive if you want. Make sure you drive it in conditionds that are similar to those you will be operating in.
Have you considered sourcging a RIB from the UK and having it shipped over or looking at what the American military are selling off. You could get a bare Humber Ocean pro off shore (8m) or the Ocean cabin rib is very nice alternatively the Parker Cabin rib is very sweet and comes complete with twin diesels for about 60k.
Even chaeper I suspect if you sourced it in Poland and had a couple of lumps fitted in the States. Reatively cheeply and fit Engines out there. I think shipping would be a 1000 pounds.