What do you hope to gain by making peace? Absolutely nothing changes whether we make peace or not.
Sancta will continue to militarize, and we will continue to militarize. The only difference with making peace right now is that we would have to give something up because we are at a negotiation disadvantage. Sancta cannot stop attacking because they would be squandering their opportunity. In 20 turns, they would be dangerously behind on tech.
Sommers, we have no idea whether Cav has deserted us. We don't know how close their borders are to angle, and we don't know if they are militarizing. They gave us Civil Service, which will be a huge help.
Although we are behind on units, we are NOT losing. Our tech lead is growing, and Sancta's gambit of teching currency as trade fodder has largely failed. Instead, they would have been better off going for the math-construction tree. Unless Sancta has the power to invade our territory in the next 10-15 turns, I think we are in good shape. Not great shape, but good shape. And if Cav will become involved militarily, we would be in great shape.
Losing the chariot was bad. I think we should pull back the two axes and fortify them on our bottleneck city spot. It looks unlikely that we will be able to destroy angle, unless Sancta gets some profoundly unlucky rolls.
Spy should be a very strong priority for us I think.