Oh hell...take it to someone that knows how to do this. I only say this because you will need to degree the cam which sets the timing events, then you will need a set of solid roller lifters or hydraulic lifters converted to solid, adjustable pushrods with light valve springs, and the rocker arms you plan on using. Most people do not have any of the equipment other than the rockers.
Just to give you an idea as to how this can go is you could end up just needing stock length pushrods or like in my case you could end up having to weld the rocker arm stud bosses on the heads up and moving the location, installing taller rocker arm studs, and then ordering custom length pushrods.
Video on degreeing a camshaft:
View: https://www.youtube.com/watch?v=7cNoVRLb73c
Videos on checking push rod length:
View: https://www.youtube.com/watch?v=5MjAxnGeGKw
View: https://www.youtube.com/watch?v=5uvwcrMc1AQ