Your Optima battery looks great, good brand, but is getting old, you might get an issue at the worst possible time.
I started carrying a jump starter 10 years ago, because I had an episode when AAA had to come to rescue me - there was some walking involved too.
Also I have a plug-in voltmeter that plugs into the car socket, to see what the voltage is, which is not a complete picture, however, things change when you put a load on it (like starting the car), but if that voltmeter shows 10 Volts I know the car won't be starting.
The guy brought what looked like a PAC jump starter, so I got my own since then, the 2500 and 5000 versions, big heavy 20lb clunks of hardware that should be charged several times a year at home (I try to do it monthly).
A new generation of Super-Capacitos, like OzCharge for $200 are a light alternative which don't have a battery but rather gather/store energy even from a weak battery, and give that same battery a kick to start. And they work for 5000 jumps like that.
$135 for PAC 5000 jump starter by the way, but there are lots of questionable/unreliable cheaper alternatives.