disco likes to start in neutral not Park after stalling
 

hey everyone, 1st time disco owner... not sure how i feel about it yet got it for a good deal 1k with 1998 gems 50th anniversary 125k miles one owner... started knocking out the 60k list slowly but surely. I have cleaned the IAC (Accidentaly removed TPS but put it back on, maybe it needs adjustment now?) cleaned intake, MAF, new 3270 fuel pump, fuel filter, coolant temp sensor, and seafoamed intake and a whole can in the tank. My problem is a couple things really, 1st my rover like to idle really low at stoplights, sometimes it will stall out at them, restarting in near impossible when warm unless i put the trans in Neutral, then it will fire up with some feathering/ pressing on throttle. It also smells really rich out of the tailpipe sometimes it will puff some black fuel smoke when trying to start it. i have been on the foeums searching and searching, it seems it could be IACV, TPS, o2s if anyone can point me in a direction, im currently getting the jeep IACV new wires and champion plugs to be installed later this week
thanks in advance