RTX 5070Ti / 5080 or an AMD AI R 9700? Need Help

Hey guys, looking into building a mini ITX for portability. I was depending on laptops before that but that keeps failing me. I have a 3070ti laptop right now but just not feeling like being part of the game to get a newer laptop with messed up GPU that doesn't even perform half the price. I was all into an AMD CPU and a RTX 4090 but turns out 4090 is nowhere to be found where I am, and if it does exist somewhere I won't be able to get it for under $3000. Not paying that.