Xybot's page

"Spells: These ki powers duplicate the effects of a spell, and are spell-like abilities. A qinggong monk's class level is the caster level for these spell-like abilities, and she uses Wisdom to determine her concentration check bonus."

SLAs are not spells. You can only add metamagic feats to spells. So, no, you can't use metamagic feats to alter qinggong monk abilities that duplicate the effects of spells.

Empower Spell-Like Ability is a Feat on page 314 of the Bestiary. All you need is a high enough caster level, which Sean kindly pointed out that you do get as a Qinggong Monk.

Quicken Spell-Like Ability is a great Feat for many of the QM choices.
Swift action True Strike 3/day perhaps?
Just need L10 Qinggon Monk to qualify.