Gear ratio recomendation

I've got a 69 dart custom right now i'm gonna have going this spring. It will be a 340 4 speed car with 26 inch tall tires. 340 is .040 over with solid roller .654/.655 lift 302/309 269/276 at .050 on a 106 LSA x heads, peak power is at 6700 rpm currently. 11.5 to 1 compression. super victor intake 850 demon carb. Will be running a 742 case 8 3/4. looking for the best gear ratio for alot of street driving rarely going to the track. I work in a different state which is a 35 mile drive and would like a good cruise rpm for 60 mph. What would you guys recommend? From what i've researched a set of 3.91s puts me at 3000 rpm at 60 with this car. This engine isn't exactly street friendly but anythings streetable if you're gutsy enough