Help Needed

0919211308c.jpg 0919211308c.jpg 0919211308e.jpg 0919211313.jpg 0919211312i.jpg 73 318 engine in my 72 Demon.
I've asked plenty of dumb, newbie questions here and those that have answered have helped me out as I'm learning and bringing my Demon back to life.
I bought this car not running, but told, "it ran" . For some reason the engine was pulled to replace the clutch and when engine was set back in, all accessories were left off.. It did turn over by hand.. Anyway, I purchased a set of fresh rebuilt 302 casting heads..an Edelbrock LD4B intake and an Edelbrock 650cfm. carb. Pulled the heads and intake off the engine to swap these out and discovered some dense sludge, several bent push rods with a couple having some of the metal scraped off and evidence of a couple of valve kissed pistons.. nothing too bad or deep, but they definitely touched.
My question is, and realize without seeing yourself and other factors, it'll be hard to answer, but some of you have seen enough of this to possibly help... Do the bent push rods indicate a major issue..? Do pistons automatically need to be replaced with minor valve indents.. ? At this point, should I just pull the short block out and rebuilt it..?
If I do rebuild it, do the cylinders have to be bored or just honed..?
Thanks in advance for those that I know will help.. You guys are awesome..! Understand that I'll probably have plenty more questions after some answers start coming in. lol