As far as choke vs. no choke goes,I removed the choke and air horn on both my vac sec holley and the double pumper.......I pump the accelarator twice,hit the starter and she fires up first time,every time,then when the
oil pressure comes up to normal,I put it in reverse or first (depends which way I'm heading),let off the clutch,give it just enough gas to keep running and move the car about 1 car length,then bump the shifter into neutral, and the motor will idle nicely no matter how cold it is,just got to put it under a slight load and get it to pull a little vacum to keep it running till it fully warms up.............
David