74 swinger 318 -360 swap.

Let me sart out by saying thanks to all you guys for the info in the past. Now i need some suggestions on my build.
I have a original 74 swinnger 318 backed by a 904 and 8.25 rear end. My 78 360 is in the machine shop for a .30 over and to be internally balanced, J heads cleaned up. Im thinking on going w/ the kb-107 flat tops. A Adv. Duration 268/280 Comp cam, New push rods, Clevite rod and main bearings and Fedural Mogul cam bearings, Double roller timing chain, RPM air gap if i can. 650 or 750 holley carb.
I want the car to be a daily driver but be able to make a couple of passes since i am close to a track. Most of my driving is city with some freeway.
I guess what i getting at without boreing every one to death is.

Is the cam selection seem to big or to small? I dont mind a lopey or choppey idel but i do like power brakes and PS.

Is the 750 holley to much or go 650? W/this combo

Since it is going to be internaly balanced do you think the 904 / 8.25 will hold up? If im not mistaken it should be a direct swap minus oil pan and right engine mount. I have a small block 727 under the work bench . Both need a rebuid. Aww my head hurts.....
Any comments or suggestions would be greatly appriciated.. :toothy10: