It is definitely a ProJet - designed by Jim Snyder (that's my ProJet that MikeR has linked to above). Mine was made by a firm called Concept Designs who were based near Doncaster, but went bump many years ago.
The degree of 'chop' from the full size version depended on weight, inside leg and foot size, so mine was made for about 11.5 stone, size 8.5 feet and 31 inch inside leg. I'm more like 12 stone now and although its a bit more of a squeeze, it is still paddleable (even if it has only seen action in swimming pool sessions this year). Yours looks similarly sized, maybe a fraction larger, but it is hard to tell from the photos.
Yours doesn't have seat fitted, but it is probably better to put a foam seat directly on the hull anyway. To trim the boat so that it floats level in the water, you need to move the seat back or forward to find the best position before fitting it permanently.
Best to put some foam or other material in to place your feet against, so that you don't jam yourself in if you hit something. I used to ram a 'suicide block' between my thighs so that I was snug in the boat - I wouldn't recommend this to anyone unless confident they can remove the block easily if needing to exit the boat.
Mine was/is a lovely boat to paddle -good for surfing, screw-ups, cartwheels, stalls, blasting, mystery moves etc.
I cut a little from the bow and stern tips of mine to shorten it a bit- these areas were prone to damage and weren't really adding anything to the way it paddled. I nearly got rid of mine some time back, but even though it doesn't get used much ( I don't get out on the water as much as I'd like), I have a strong attachment to it (and an incentive to lose a pound or two
Regarding paddler weight/boat volume I can't help much except to say that roughly a boat will support the same weight as its volume below a given water line (using density of fresh water as 1kg per litre). As an example, take a volume of, say 100 litres which becomes 100kgs, then subtract the weight of boat and any outfitting, say lets say 25kg, which leaves a weight of paddler plus kit of 75kgs (seawater is more dense, 1.025 kg/litre so supports a greater weight or the boat floats a little higher in the water).
Resin supplies, I'm in Manchester and have used Delta Resins, now based in Reddish near Stockport and also a firm called ABL Stevens (
www.resin-supplies.co.uk) in Sandbach. Whether these are of use depends on where you are based.
Hope this helps, Richard