Cam looks like its toast...whaddya think??

Stopped by dads today and he has started to take apart the 273 for new gaskets. A couple questions

1. We were checking the cam out and a few of the lobes looked iffy. Whats yer opinion, and if it needs replacing, what do you recommend for new cam and lifters??

2. The timing chain(single roller, steel teeth) has about 1/4 of deflection on one side(opposite side snug). Teeth on both gears look good. Normal?? 1st pic is straight edge resting against chain, 2nd pic straight edge pressed against chain, 3rd pic is straight edge pressed against chain showing the amt of deflection. Should we upgrade to a dbl roller??

Its a date code of 5/6/66 273 4 bbl.

Thanks
4spdragtop and dad