427 S B World Motown Short Block

I have a 32 ford cabriolet , engine compartment  sides off (2,400 lbs) w/ 350 auto
w/lock-up& 2.78 rear  28" tires   Later I want to replace them w/ a 700 R trans
& 3.50 rear. I  am  thinking of getting a 427 world Motown short block & using
parts from  my  383 engine (which has 5,000 miles on it) Edelbrock # 6073 RPM
Heads  70 cc (9 to1)  w/ 1.5 roller rockers & Edelbrock # 7525 RPM air- gap
dual  Quad  w/ (2) 500 Edelbrock Thunder Carbs , MSD billet Dist & 6 AL ing .
This is not for racing just for fun .
Questions :
( 1 )  My 383 never ran hot ( BeCool  radiator , 185 thermostat w/ 2 span
       fans  that go on @ 190o) & hoping the 427 will not run hot ??( too
       hot is not  too fun ) How would the 427 react ??
( 2 )  The cam I have now is Edelbrock # 7102 .334 .244 Dur & .488 .510 ,
       lope sep 112o & intake ctr 107o (not roller & will not use) . It has a rough
        loppy idle  sound  which I like to keep but in a roller cam . What
       roller cam would  be good in the 2,400-6,500 range to keep that sound & but
       be more aggressive w/ the 427 ??
( 3 )  Would like mid range for sure but some where around 2,200 & 6,500 cam.
( 4 )  Would the long throw of the 427 take away the rough  lopey idle ??
 5 )  What wt & kind of oil is good  ??
( 6 )  If you take a  350 short block chev bored  for a  383 & a 427 short
       block World Motown every thing the about same which would run the efficient
       & a  better set up ??
                 Sorry about the mundane questions .
                         THANKS for  your help  Dick > dickkir@cmcast.net