have you tried running with 12/0/18 masteries on kindred with double edged sword instead of expose weakness and strength of the ages over fervor of battle as your keystone?
replacing the 7% armour pen from battering blows with 11.52 flat armour pen reds instead of flat ad for bigger impact early game
going deep into the resolve tree would grant you more sustain (not that kindred is lacking any) by amplifying your ult heal and sustain from lifesteal and passive, you'd have summoners up more often (red smite), 15% tenacity and slow resist and the keystone would offset the extra damage from double edged sword and offer more sustain late game
i think the survivability could work with your feast or famine play style