Do I need a 1440p monitor?

I’m buying a rx5700xt and a ryzen 5 3600. I’m gonna play games like Cyberpunk, COD, Rainbow six, and doom eternal. I bought a 144hz 1080p AOC 24g2 on sale from 280$ to 190$CAD.

I’m not sure if I should get a 1440p monitor because I still have 2 weeks to cancel the order, I also haven’t payed yet because I’m paying when I got to pick up my monitor.

I want to play 100fps+ at all time in highest settings. I saw a good sale and took the chance before the deal was over. What should I do?