I think the greek itineraries look great! We’re considering one as well, cruising around Greece is a great way of seeing that part of the world.
I think after the issues they had with the first round of Resilient Lady cancellations I’d be surprised if was delayed again to be honest.
Main money saving advice is to take part in the sailor loot referrals on here as much as possible, following the link on here and linking up bookings with anyone already booked. We had $650 on our recent voyage and it was amazing help.