take like 3-5 minions with you and lure out CC troops. If there are balloons then tough luck for the defender, if not, just use the minions to kill the BK. :)
AFIK lightnings don't affect flying units. You need 2x level 4 Giant Bombs to kill level 5 hogs.
OP If you are Th 10, have the two disco balls an still have an issue with the hogs then you are doing something wrong. Set them to multiple targets so multiple hogs can't heal and have disco balls overlap each other.
There are plenty anti-hog layouts even for TH 9, but they are more prone to other types of attacks. In my hones opinion all depends on the skill of the attacker and how hard to lure out are your CC troops.
Anyway, if you got the mood of reading lots of pages (I did) have a look at
[Project] Let's build a TH9 base for the new loot system cos there had been discussed a lot of interesting stuff regarding this issue and
[Project] Let's build trophy base TH9 (& 10)
You could try with minions in CC cos are fast and will deal swiftly with hogs but are easy to be killed by archers/wizard.