Just curious, how old are you, IB? Respectful, intelligent questions are always answered here, but at this time I have no idea what you're asking. You want to buy a kit then replace everything? Not a good idea. Please take the time to put more thought into your question and phrase it for adults.
I guarantee you want to put much more thought than it appears you have into an AR purchase. It's not about what we want and recommend, and a quick link - it's about what you want, so tell us and then we can help.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek