Holley 950--really--its SMALLER than the 850 ? Look it up, the difference between the 750 & the 950 is the 950 base plate uses 1 3/4 and the 750 uses a base plate of 1 11/16. The main body's are the same, the 850 uses 1 9/16 and 1 3/4 base plate. the 750 & 950 are 1 3/8. Barry Grants are different. Why does Holley do that, no idea.
Now what type of carb, booster wise. I have found the annular discharge booster give a little power gain over the down leg boosters. Some pro racers on speedtalk agree, guess they are better up until 6000 rpms or so. With the stroker that should be your max rpm's.
So I myself would get a 750 annular booster carb. Think its list 9379, Holley does not make a 950 annular but a carb shop could change them but thats $$$. Holley does offer it in the 850 so maybe thats the one, still is like $450 brand new.
No choke is no problem, only need it for the first 30 seconds. I do like using the heated intakes, but the RPM heads don't have the crossovers. Guess no winter driving. It was 28 degress today but no salt on the roads, took my car out, ran just great. Lifes too short to keep the car setting all winter, IMO