If he's going to talk his siblings into taking the $75k offer, get a place big enough for him, Tami, Fred, new baby, and Liam, and put food on the table, he'll be lucky if he has a few hundred dollars left to trade with. And no, he won't get rich from that.
If that was supposed to be the endgame for Lip, they should have had him make at least one good decision this season. Everything he's done has been impulsive, petulant, and selfish. Those are not the qualities of a patriarch who is "firmly on the ground."