I take it you didn't camp and so weren't carrying camping gear? That's a significant difference.
I agree that 200km a day is definitely do-able... if you're unladen! It's do-able even when loaded BUT it's much much more of a task and, imho at least, it'd be more of an endurance event than a holiday.
I am certainly not wishing to discourage Ajay, far from it, but I'll not hide from saying that I think it'll be hard going.
A pannier on one bike, a saddle bag in the other. The saddle bag held the metal stuff (spare/tools), so weight was reasonably well shared. Probably lost a kph or two up the hills. But another reason to stick to hotels.