Not seeing it I cannot tell what your cylinder condition is but they are tough,tough,tough in modern bikes.
I suspect if you look closely you will see the factory cross OEM pattern still on the walls. If you do not have the measuring equipment I would say that a local bike shop or machine shop can help you out. I hope you have a Honda service manual - it's invaluable.
If you aer satisfied that the cylinder is ok then I would do the cylinder wall cleaning up and a new set of rings,piston, wrist pin bearing ect... The chain cover looks like it took shrapnel hits. Take a good look at the lower end also.
Black Hills of SD
Life without Motorcycles would just be boring, really boring