BT4K is not keep away at all. It's unsafe and throw punishable on block and small whiffs. 6H+K is also not keep away, it's moreso whiff punishment and a way of getting in at it's correct ranges.
Here's what I've been using as keep away;
7K6 - Goes into Carrera stance and lets you stop the stance.
Neutral K - i14 high kick with follow ups (notably KK and K6K4). 27 damage on normal hit which is solid.
3K4 - i15 frame mid kick and is -3 on block when you cancel it in BT.
PK/PKK4 - PK is an i13 frame high kick with a follow up that is safe at -3 when you cancel it into BT.
4H+K - i12 mid kick that's 40 damage on normal hit (does not care about other i12 mids at all).
4K - has follow ups (4KK respectively)
6P - i14 mid punch with delayable follow ups. If I delay anything, it's going into 6PK4, leaves you at -3 on block. On counter hit you score a stun and you're in BT stance, lovely.
1P - i18 frame mid punch, slow, but has follow ups. 1PK is safe at -5.
BT4P+K - i12 frame mid P/K. This thing here is so multi-purpose as keep out and a way of getting in. Safe at -3.
BT2P - i16 low jab, +17 stun on normal hit gives Lisa access to threshold.