motor upgrade opinions needed

I have the oppertunity to go from your basic 350 with with headers, and a few Edelbrock upgrades that seems to be working well so far, to an almost new gear drive setup including a

292 cam,
gear drive-advance,
roller rocker 6 to 1's with scotch locks
belt drive Paxton type super charger blower
Holley 750 carb.

Although I realize this an oppertuinty I would be CRAZY to pass up.
My question is "How is this going to perform long term, if it is used as a daily driver around town?
Do high performance cars do okay if they are only driven hard occasionally. I mean, I definately like to drive fast however I'm in Arizona where there are speed cameras every few miles on the freeways so keeping it down to a dull roar is necessary unless you want to pay a lot of tickets or even have your precious, treasured, automobile taken from you.
I guess I've always been under the impression that higher performance motors NEED to be run hard sometims to help keep gunky build up from
causing them to fail eventually.
I could be mistaken... I admit my in depth knowledge is pretty limited. I Took metal shop in school and was considered odd. I wish I had taken auto shop instead but who knew.
Any opinions on the subject would be appreciated greatly.
Thanks