I need cam advice for a 351w

[82 GT]

I'm starting to buy parts for rebuilding my 351w that's in my '82GT
and I am debating what cam specs I will need.
This is my combo so far:

- Forged flat top pistons(.060)
- Edelbrock performer intake
- Carter 625 carb.
- Mallory electronic distributer
- BBK shorty headers w/ flowmaster exhaust
Most of the stuff I already have. I just bought the rebuild kit from Summit Racing last night.

I'll be runnig a C-4 tranny with a 2000 stall converter.
Depending on my cash flow, I will either keep my '69 heads and freshen them up or buy aftermarket heads.
It will be street/strip car.

I was thinking of Competition Cams 280* with .512 lift int/exh.
I want something that will work with what I have but I also want to hear a nice radical idle.
I also think about a duel pattern profile from Cran Cams with those similiar specs.
What do you guys think? Are those specs in the right ballpark for me?
I'm open for suggestions.