318 LA rebuild after losing a valve seat

RustyRatRod said

No way in the world that will ever cause the valves and pistons to intersect.

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Yes that is pretty mild for lift and duration, and these pistons will be about .070" in the hole. I'd put it together and just snug the heads bolts on one side with clay in there, rotate the engine 2x, and see. There are some things you need to do with the hydraulic lifters on the cylinder being checked to be accurate.
As for the pistons, you can only get slightly better for stock replacement types. I'd prefer some KB's, but there is no known 318 performance pistons out there right now that you can put in without a mandatory re-balance. So for a dirt simple build, you have no better choices.
And, OP, triple check your oil passage plugs everywhere!