Practically Clueless Newbie Needs Help Getting His Dart Up and Running

Hey guys, ive got a problem! A few months ago, the 225 in my dart started knocking. It has about 115k on it, and had never been timed, or the valves adjusted in its life apparently. Me and my dad got it apart just a couple months back, and discovered cylinder #4 back from the front of the car was making pretty serious contact with the i believe intake valve, actually causing a nice deeper clunk sound. i thought before tearing into it, that it was bottom end, but the damn valve was very pitted, as in, basically flat. I ask, should i get the whole motor rebuilt/ rebuild it myself, or just try and see if i can get a new head and new rings and maybe bearings, sort of a budget rebuild? id like to save money here, im 16 and working at a local pizza place making 7.25 an hour. a rebuild kit online ( A master kit) costs between $400 and $500 dollars, and i was wondering how much it would cost to have a shop do the work, an estimate at least.(I have about 250 massed up right now, and a brand new set of push rods, and id like to cruise this thing to school in august) Ive only got 1200 in the thing, but it needs a lot of cosmetic work , some bad rust too. fairly fresh 904 trans though. Drove the thing home, it topped out at about 45 mph. Due to bad maintenance i suspect mostly, single barrel carb on it. Thanks for the help guys, much appreicated. P.S- im in north georgia, close to canton , and if anyone who knows what theyre doing would be willing to help me rebuild it or show me whats what, thatd be awesome.

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