First small block Mopar build More than a little nervous

Don't get discouraged over over think things to much. So your research and remember ever body is going to have a different opinion. As for my experiance, unless you're building a max effort engine, stick with stock type, but quality valvtrain parts. You don't need exotic parts to spin 6500 on a moderate street strip Mopar. I've got a solid lifter 340 built 30 years ago running single springs, 273 rockers and pusrods and turns 7500 at anytime reliably. Take your time. Triple check everything and stay away from China parts. You be fine