Could keep all of them that don’t have annual fees, and spread out your purchasing. I have three cards, one that’s 2% off everything, and one that’s more off food, and another that’s more off online purchases. My aggregate credit limit is pretty high even if each one were a bit modest (they aren’t as modest as they used to be though)
You can always pay off your balance more often than monthly. When I first opened my first card, I paid it off every Friday, to make sure the small limits were available if I needed them (I had a credit limit of $1,000 back then). Now I pay them off every payday, still multiple times a month. If you need to carry a large balance across payment cycles, you’ll get stuck on a high interest rate treadmill you don’t want to be on anyway.
The credit limits increase with time. The $1,000 card I started with now has a $10,000 limit. Mostly the limits came automatically, but I did request an increase to be able to pay for a home repair in a single transaction. Now between the three cards I have a lot of limit.
A fair number of places where you might want to spend a lot of money in a single transaction won’t accept credit cards anyway over a threshold. Last time I bought a car after establishing the price I asked about just charging it to a credit card. They were willing to do it only for $2,000, so I had to cut a check for most of the car anyway.
It’s worth a shot, but by and large the more reasonable conservatives are generally no where near those communities. Certainly the moderation of those communities are fanatic about Trump. The conservatives that you might have hoped to call Trump on his stuff have calculated that they can’t afford to challenge Trump even if they personally think he is in the wrong. The ones that have calculated otherwise have been pushed out of the conservative community.