There is some risk to what you’re planning and since you said you do “a lot” of Airbnb, I imagine the plan involved a pretty large amount of gift card purchases.
Have you considered doing the Ink Cash card by Chase?
5x earnings on Office Supply stores (Staples, Office Max/ Depot and more) which sell such gift cards.
Additional upsides to the Chase INK card is no annual fee, no 5/24 slot used, 90k sign up bonus plus the card earnings and 0% for 12 months if that helps.
The big limitation is that the 2 no annual fee Ink cards do not allow for points transfer out to travel partners.
You’d eventually need a Chase Sapphire Preferred, Chas Sapphire Reserve, or Chase Ink in your household to do that.
But that can come down the road too.