I could see Tuni definitely responding to an add and making mention of her ideas.

Phoebe Yaxley would also be a married UC woman that would gladly host a party as well if you need more of them. She's a younger wife but has been married since she graduated so has been on the social scene for a few years.

David Pettigrew would support his bro, too. Might even go so far as to offer helping with organizing things if he wanted since this is his "downtime" and he'll be bored in Hogsmeade and want things to do. Just don't ask him to talk to the ladies.