I'm a beginner producer who recently went to NIA, are these support cards weak?

If you get P-Drinks, the parameter boost is suited for the current meta, so that would be strong. Also, I think there's a support card (the summer festival one) that gives +5 score every 5 skill card uses, so it would be nice if you could get that too.

I think you have a pretty strong set of support cards. NIA often goes out on outings or for business, so support cards with abilities that boost stats during outings and business are recommended. Also, the Asari-sensei support card, 'The main event is coming soon,' is quite strong, so you can probably just throw it into your team without much thought.