Are you trying to max your CHA to have more Heal spells?
Because you could:
Ancestry(Human): WIS+STR
Background(Battle Healer): CON+STR
Class(Cleric): WIS
Free: WIS+STR+CON+CHA
Which gives:
STR 16 DEX 10 CON 14 WIS 16 INT 10 CHA 12
that gives you 2 free heal spells, but your WIS and STR would be on par with each other. You also gain battle Medicine, which is a nice emergency button.
You can change you BG to put the bump on CHA instead of CON, but CON 14 lets you get Fast Recovery.
