If the small blind is defending preflop vs. a 4bet with AA, AKs, AKo, KK, QQ and JJ, according to Flopzilla anything but AA and KK are negative equity against his range.

Are we concerned about being exploited by our opponents if we're only calling 5bet shoves with aces and kings? Or is this not an issue at these stakes/game type? Also, if we're not calling 5bet shoves with queens or jacks, does this mean we shouldn't be 4betting with them preflop, but rather just flatting? (Under the assumption queens and jacks play very well in position against our opponent's preflop 3-betting range, and 4betting seems likely to make worse hands fold, and better hands call/raise.)