Hardware for Premier and After Effects

Hey guys, I used to have Premier and After Effects back in the day, about to purchase both again. I've been out of the film game since 2006.

Im going build a new PC just for film editing. Any of you experienced film makers recommend what kind of sound card, video card, Ram, hard drive space, ect. I should purchase for maximum efficiency. 

Also, affordable video cameras you might recommend. I want my short films to look professional and I know the camera is where it starts.

Lava mic packs or similar individual small mics that you put in the actor's shirt you might recommend for good audio don't want to use a boom mic. Thanks in advance for anyone who takes the time to respond! It's much appreciated.