Yeah, perhaps less than ideal.
Clean it up best ya can and hopefully that one dark line that looks to be a deep groove is not through the chrome.
Piston looks like it might have had the old screwdriver through the exhaust port as a piston stop trick.
New set of good rings- do the grooves with a jewellers file so the rings do not catch on the lips and it will run I guess- not ideal, may start peeling lining- but that might be next tank or ten years away.
Give the bottom rod bearing a REAL good looking at- I know a guy paid big money for a secondhand cylinder for a 2100- slapped it on and another bit of cage that took the original out came loose- or the first broken bit was still in the crankcase and ate the replacement pretty bad.
So he then got a Dukes kit and bought it here- all up for what it cost ( including good 2ndhand crank) he could have got a good 2ndhand 3120.
Remember the shipping cost, the exchange rate and possible GST implications to get a Dukes topend here- suddenly the cheap 2101 is not so cheap no more. Granted- about the only sensible option- but you know what I mean.
If it was an all day every day money making saw- you could justify spending big on it- but its not going to be is it- so probably you could make what you have run and be happy for a bit.