slant daily driver buildup

Ok so here is what we got so far
2bbl super six intake and carb
1.70/1.44 valves
mill the head for 9:1 compression
Erson cam 280/270 (where will this put my power range? will it work for torque and mileage?)
oil pan and pickup from old engine
2 1/4" single ( any muffler in particular)
Electronic Ignition or HEI
I will be using a 904 either out of the 73 duster (yes i know I will have to swap to a floor shift) or I will fix the pushbutton 904 thats in the dart (what do you guys think?), either way it will be just a stock rebuild unless you guys have any reccomendations. I was thinking about using the duster parts to also convert to a big bolt pattern. Any more reccomendations on small parts for the motor ie: thermostat temp, starter, anything?