340 carburetor selection advice

My 340 is similar to yours except 10:1 and cam is [email protected] I run 93 pump gas.
get a qft750 dp with 4 corner idle. In FL you don't need a choke.
I'm in FL and run one with this setup:
PJ 72 SJ 84 MAB .029
Emulsion stack 4 hole metering block .028/plug/.028/plug If using 3 hole block .028/plug/.028
PVCR .055 6.5PV
IFR .032 moved to bottom position (very important to improve cruise AFR)
IAB .067 all 4 idle screws approx 3/4 turn
both throttle plates even 1/2 turn out from fully closed.
Ignition 28* initial 34* total mechanical vacuum advance at cruise mid 40*s
With no choke the motor will run like $hit (lean) at idle until it comes up to operating temp. If motor runs without having to feather for a minute or two cold engine, the idle is to rich.
This setup works for me at sea level and FLs humid air. In the dog days of summer you can drop the jets to 71/83.