IhromantMod usually improves the speed of the game. From the speed standpoint, when you missed to include Fresh Mod, you will receive ordinary Wywerns and Angels in conservatories. So, It could reduce your speed of acquiring battle stack and slow your speed down. My assumption would be for now that there will be continuation of the game.
Also you can't predict which castle pair it would be before joining. So if you forgot to on Fresh mod, you can stuck in the situation with 3 hives on respawn and strong GO. In case with Efreeti, it's painful, but still possible to break it, but with unupgraded wywerns - it's a complete disaster. The only castle is weakened with Fresh Mod are Necro and Conflux, so low probability to get them.

TL;DR. I'm considering 1st variant for now.