Mild LA 318 Cam Recommendations from Those Who Know

at your elevation,
I would
install stock 360engine with either the 360 2bbl cam or a 318 cam. Cheap and effective, plus dead-tame for the wife. If you want the 273 look, install the 273/318 open-chamber heads. Install the 273 4bbl intake, paint it 273Red, and who's gunna know it's not a Commando?
360 heads will like the 340 iron manifolds.

Like I said; at your elevation, with pistons down in the hole, That's what I would do ...........
But, thinking on it, I haven't found a home yet for my old Offy Dual-port, and I have this 650 Spreadbore, and a pair of J-heads ....... Hmmmmmmmmmm