trasneoir,
Flex 500 Explore is the best option based on your overall ideas.
There's a 10% discount for new customers if you buy online at the moment.
Regarding maternity cover, there is no advantage in buying more cover.
Private maternity cover is based on seeing your chosen consultant privately for each visit throughout, in the hospitals private clinics.
This consultant will also attend at the birth.
A private room is covered if available at the time of birth, there is no guarantee regarding availability of a private room.
Private maternity costs from approx 2,500 to 4000+ depending on the chosen hospital and consultant involved.
A bit of research and decision making required here, for future reference.
Snowyb