It's not easy to tell if the cutlass bearings are good or bad except when installed and matched to the shaft. *Then movement at the prop end indicates the need for replacement. *Also if these have been out of the boat for 7 years, and are the hard rubber type, they are probably so dried out they aren't likely to be good. *Best replace then, I should think.
That said, if you can precisely measure the distance between ribs of the bearing from one side to the other, and they are all equal and conform to the tolerances contained in the following link, then maybe they are ok. *I'd still replace them just because of the age...