318 and 360 small block question
Unless you have real desire to do a 318, you would be better of with a 360.
For any given power level a 360 will be more streetable have better idle, part throttle etc.., plus better at daily driving street rpms 1500-3500+ and will need less gear, stall for similar performance, Also can build about 13 % more power for a similar streetability.
Sure you could build a strong 318 too but there no point if it really don't matter to you.