Advice on my "stock" 340 build

Good morning FABO..
Im getting ready to bring my 1969 340 to the machine shop for a "stock" rebuild, it wont be 100% stock but pretty close.
I always read to build the car to your expectations and driving style, so if thats true then a stock rebuild suits me just fine.
I love the thread that @RustyRatRod started about hot rod bliss and keeping it simple and i want to see/feel what all the hype was like back in the 60-70's
my goal is to have a great reliable 340 to stuff into my Duster/auto/355...

I want to mimic the 1968 340 specs, so far ive aquired
1. 1969 block and crank
2. X heads and original intake, hope to use the original carb also, needs rebuild
3. 1968 4-speed cam from Oregon Cam
4. 273 adjustable rockers with grooves
5. 355 rear ..8.75
6. re-cored HD 22" radiator So im looking for advice to make this "stock" 340 run really great, im not trying to squeeze every last drop of HP out of it... im more thinking on how to improve on an already great platform. what tips and tricks can i tell my engine builder to do.
i have always heard that some 340's ran better than others, im also interested in any cooling suggestions, in the past ive spent more time staring at the temp gauge than enjoying the ride .
I hope ive accurately described what type of build im after, I am not a mechanic, I do a lot of my own restoration stuff with the help from @davescuda but im not engine building savy so I hope you guys will suggest machining improvements and any tips so i can cruise this summer with piece of mind.. Thanks for reading and i will await your 340 knowledge...Rich

I'm finally getting my 340 built this winter, still not sure what it will go in.

69 340 block bored + .020 and honed with torque plates, decked just enough to clean them up
Standard 340 shot peened crank
+ .020 NOS Chrysler "72" lower compression 340 pistons
stock 340 rods, reconditioned with Direct Connection Rod bolts and nuts
Total Seal gapless top ring set
Custom Racer Brown solid lifter cam, 214 duration @ .050, .450 lift on a 105* intake centerline.
Direct Connection intermediate shaft
High Volume, High Pressure spring oil pump
Windage Tray

Original 2.02 intake J heads milled .020 and .019 on the intake side, chambers cc'd and equal within + or _ .1 cc bowl and general cleanup, gasket match ports except the bottoms.
Milodon Stainless Valves
stock 340 valve springs
Fel-Pro Viton positive valve guide seals
chrome molly retainers
Fel-Pro Gaskets

Either a "71" 340 or an Offy Port-O-Sonic intake with a "72" 340 TQ
Direct Connection distributor with a chrome box
3 row original radiator
5 blade aluminum fan with thermal drive