Best for high spend? I have a couple of large expenses coming up

Hey all. I’m about to spend an absurd (to me) amount of money and I’m trying to optimize the rewards.

I’ll be spending roughly $40k with a contractor/builders over the next 90 days. He’s likely going to charge me a 3% convenience fee, so I doubt I’ll come ahead with rewards category or cash back but I like the credit option because I can get sign up incentives and if he’s a bum I could reverse the charges.

Secondly I’ll be spending $10-15k on airbnbs for a huge group vacation I’m organizing. Is the best move still Target Circle Card + Airbnb gift cards for 5% back?

760 credit score, I have Chase Ink and a bunch of other cards but I don’t think I’m at any of the limits, I’m open to getting multiple cards here. So far considering Amex Plat for the huge points incentives, but I don’t love the huge fee. That said I do travel a bit so those benefits could pay off. TIA