Sell the 17 & get the Air?

Really debating on selling off my iPhone 17 & buying the Air. I really only got the 17 because it was free thru T-Mobile but after going to the Apple Store and playing with the Air, the form factor is more appealing and easier to use. What do you guys think, good or bad move? What could be the major trade offs? I like to play call of duty mobile too occasionally. Not sure if that’ll overheat the phone.