Different weights have differing amount of esters, no way would it even be 50% esters compared to the pao. The US gov't has manu's scared to recommend anything but 20 weight most of the time thanks to the teeth in CAFE standards, it is your equipment, run what you want. No the tolerances are such that 30 weight will damage a car. If you like, try using both and seeing the engine temps. In another forum we have 80% of the guys running 30 weight in Hemi's which manu wants 20 weight, the only noticeable difference has been like 1 or 2 PSI in oil pressure, and much smoother running engines. No temp increases either, but like I said if you are worry invest in a 20 weight run and check your temps/pressures.
However, back to your question, the 10w30 actually has zero Vii's, so ditch both of your choices and go with that imo. If you go 20 weight then go 5w20 redline, that as well zero Vii's. The other choices even the 5w30 has some vii's. If you are racing, why have an oil with vii's if you don't need them for some other reason like cold flow? base oil is better at lubricating then vii's at operating temps. ebay has 10w30 on sale for 9.97 a qrt, I bought 5 cases from the guy a racing vendor. good day