I dont care if that motor only had 4k miles on it, Always get your head and deck checked for warp. Heads can warp just by the way you take them off the block when undoing head bolts. It isnt just a mileage thing. I figure you put too much time into rebuilding it, NOT to have the head and deck checked just seems foolish to me. /rant
hope the headgasket lasts long enough until you can afford some down time. I know it sucks when you have to fix unexpected shit when you dont have the time to do it lol.