Im a big fan of keeping it simple, for a baby cam like you are considering its a no brainer to go hydraulic flat tappet.
Rollers are just to expensive and not worth the added complexity for what you are trying to achieve.
There are millions of hft cams out there and not going flat or self destroying. Dont buy into the Zinc scarecrow and self eating lobes. Myths of having to run exotic oils and Ebay barn find New old stock vintage oil filters because all the new stuff is crap...
YES you do have to take initial startup and cam break more seriously but after that you're all good and just run decent oils.
HFT, long slot stamped rockers, 068 iron dual plane, a decent Qjet and a cam that is NOT a new extreme fast ramped mofo (will create a rackety valvetrain otherwise) and just drive the thing everywhere.
Since cruising and OD transmission are on the menu pick a cam for that.
In one of my cars, l have a rebuilt 350 pontiac with an iron 4 bbl 068 intake, 670 heads , a small 268 cam, hooker 1 5/8 headers with a th350 and 3.36 gears and for a mild engine , it goes like stink and lights up the tires at will .
Peter.
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