Can hero c bet range 1/5pot without much ev loss?

[GTOonVinyl]

Online 500zoom nlhm 100 bb eff.
Hero opens LJ, BB 3-bets, hero 4-bets, BB calls.
Pot - 51bb. Flop - 8d4h2c.
BB checks range.

1) Can hero use 20% pot size bet to c bet full range without much ev loss? (assuming that both ranges are "not out of line")
2)If hero chooses to use 25% bet and mix in some checks backs and low freq jamms, why does solver chooses to c bet at a higher freq AKoff with Ah as opposed to other AKoffs?
Is it because AhKc, AhKs, AhKd all unblock villains backdoor Ahigh flush possibilities?

[JFletch2323]

I would think in a 4-bet pot a flop like this doesn’t change the range advantage much since neither of you should connect much with this. It’s basically a question of whose overpaid is higher or which of you just has AK. Given that you were the aggressor and have position, I would think you’re good to cbet 100 percent of the time. And also a small cbet is ok because you probably aren’t worried about draws.