Regular Guy;
I could not tell if the boat you are looking at has a tiller or wheel steering.
If you need a trailer, contact Ron Frisosky with Road King trailers at 941-914-3890 as he has the specs. Orginally Magic Tilt built the trailers but not sure if they still have the plans or would even sell direct.
On the motor, 10 hp max on the transom and do not let anyone tell you either. The transom is designed for 10 hp only. With a four stroke 9.9 you will achieve full speed with motor size and in fact you will not need full power. When the bow raises up under power,essentially you are going as fast as you can; otherwise you are plowing in the water. long shaft or 20 inch is suffiecient but if sailing in the ocean a lot with high waves, you may want to consider the 25 inch shaft. Also, flush the system with fresh water from time to time and you will need to buy a motor flush attachement which is simple and cheap. Make sure to add the additive due to ethanonl crap in gas. If you can buy straight gas all the better.
I always suggest paying a marine surveyor. Well worth it if not educated enough to look at boats when buying. I would suggest to look for leaks in several places. First is the hull to deck in the transom. Simply take a flashlight and look thru the aft storage doors in the rear berth and shine the flashlight to the rear and bottom of the hull and while at it, look at the lower rudder gudgeon as they sometimes come loose. Pull up the cover plate either screwed or silconed down at the base of the compression post to see any leaks. You will see a large bolt and that holds the centerboard bracket in place. If you ever have to replace the centerboard for any reason mostly to replace the centerboard line, that is where you go. Also, check the perimeter of the water tank to make sure no leaks.
On the fresh water system to keep water to the faucet was a small and I forget the name attached to the hose at the end of the faucet underneath to keep water pressure on the line and those were easy to damage and replace.
While the boat is hauled for an inspection, power wash the inside of the centerboard hull housing and make sure the person using that machine has it on low vs. high pressue. Will discuss that later. The best time to check a boat is when it is raining to see if there are any topside leaks. In addition, check the wood floor inside the main salon cabin area to see if ok or not.
Original decals you can forget getting these days. Pull off the old ones. Not sure if this site store sells them but West Marine use to have a variety but the best place may be an automotive paint shop who should sell them or a detail wholesaler of sorts for automotive.
If you do get a trailer, never store water in the ballast tank while boat sitting on trailer. If you have any more questions, send me an email thru this site with phone number and where you are at so I do not call early or late and will be glad to talk with you.,
crazy dave condon