It could be the issue with the original Safety Capacitor that was replaced was a short that was tripping the breaker. I would imagine an experienced repair person with a Simpson 260 Multimeter in the day would have ruled out the Horiz Output Transistor in the first 5 minutes, found the low resistance to ground from the collector, eliminated the upper Safety Capacitors, flipped the set over, removed the "Service Saver - Easy Service" plate, and determined which one of the 3 remaining was shorted, and replaced it, in the next 10 minutes. After conscientiously measuring the HV, decided the others were fine.
The capacitors you ordered are a PCB short lead version. Easy enough to remove the old capacitors, leaving as much lead as possible, and
"J hook solder" the new capacitors in place. You could leave the orange drop in place, its probably fine.
While your navy is in dry dock
You might consider cleaning the Service Switch, they are often fussy.
You might also consider at least finding the 240v boost filter C270 10uf 300v electrolytic so you know where it is. That supply feeds the RGB Video Outputs and the CRT.
I can't find a part number for the CRT Socket. Maybe someone with an original Zenith CM manual and/or the CRSP can chime in. Those parts often show up on the auction site. As Zeno said, you may be able to find a good sub.