Replacing a crank shaft questions

ok, so the wife and I are juggling our careers here at home with a 2 year old in the middle of poddy training. its a train wreck all the time around here.
then The Shop, that hadn't contacted me for 4 weeks, tell me that the crank is scored quite badly. I didn't ask for much more detail than that because it was pretty bad in early 2012. the 340 was a private sale from a guy near Ellensburg Wa. I put it together and drove it 1000 miles and it started making alot of noise and leaking oil from the rear main. Took it apart noticed that the bearing might have been put in wrong so I replaced it and the thing melted down a second time. I moved to Jacksonville Fl.and had a shop there line hone the block and It seemed ok. Ran good but always left me some metal in every oil change. It was just a mater of time I always figured. It ran good really, used about a quart every couple thousand miles and ran 13.3-13.5 quarters a couple times a year. Always trying to get under 13.... So the last 5 years in east Texas it ran 5K a year with a little test and tune mixed in. Thats what I use it for that's where Im headed. water pump broke last month and it overheated. Enough to diesel after i turned it off for a couple minutes trying to get it to stop. Had a local FABO member / racer recommend The Shop, double checked with a performance shop that actually farms their machine stuff to The Shop. So I took it there to get checked out and long blocked. they've been in business forever. I think their clients often hit a financial roadblock when something goes wrong so they assumed that I would not pursue the rebuild after calling the crank "toast". It was turned many times before I got it and now it's below speck. (im told) and frankly don't care If I can replace it. Additionally the harmonic balancer has lots of holes in it so it's prolly time to start over there too if I can. So I see on ebay there are cranks but in the back of my mind know that something is weird about my model year. And I have this 1968 manual that only tells me some **** about a Maltese Cross. So I lobbed some brief and I'll admit cryptic questions your way to attempt to avoid an impulse buy. I have it down there don't have time for incompetence but sometimes you have to sail the wind you got.... So I learned alot from yall so far. that original equipment means nothing at this point, that im definitely internally ballanced and there are cranks out there after all. I honestly don't think The Shop every looked. Anyway there's where I am. I got some advice to go new if I can and to get everything to balance maybe go with a kit. I am interested in staying with the forged crank (all my interest in the original years was because of this) but only recently decided that used is prolly not the way to go with this rebuild. I am going up a cam size, still pretty modest, still like to get into the 12s and continue to terrorize Kia soccer mom's on the state roads. So I don't think I want to go with a Stoker but I have not found a 3.31 stroke kit thats forged yet. 3.5 will do in this case if all things are equal. does that help? cuz dinners ready and it's time to go pee again.....