The inflatable boat I have is only 7'6" It cost me $360 when I bought it from Amazon but I was told it can be had for less at Ocean State Job Lot when it is in stock.
The primary purpose of this boat is to transport me to my mooring, a distance of about 500'. It is propelled by a 1979 Min Kota 15# thrust trolling motor powered by a riding lawn mower battery from Walmart. A few times I used my Yamaha 2.5 hp outboard on it to travel a couple of miles to pick up my larger boat at the marina and also to go fishing. It is a slow, bouncy and sometimes wet ride.
I suggest a larger, deep cycle battery and a more powerful motor that can be found at Walmart. You will also need to have a charger, paddle, whistle, pfd and a throwable cushion. The state says this is a boat and therefore has to meet their boat rules including getting it registered and applying bow numbers. I have plastic panels from Amazon for my bow numbers. They break easily. You can also paint the numbers on the boat. If you use a gas motor add a fire extinguisher to the list.
Now for the good news...
It can be quite relaxing to putter around quietly close to shore.
You can put this rig in the back seat of a car.
It won't tip over.
It's so small you can store it practically anywhere.
Here is a link to what Amazon has now:
Bestway Hydro Force 91 Inch Caspian Pro Inflatable Boat Set with Oars and Pump
https://www.amazon.com/dp/B01JT9X504..._EVvREb5PB7FVS
The boat they show on the front page has an inflatable floor. Mine has a wood slat floor. In the pictures you will see a slat floor like mine. Which they send you I do not know.
Good luck!