I can imagine that working in certain playgroups, however the primary problem you face is that since you have limited fetch options for colorless creatures with low cmc values (like
myr retriever) you might end up with either
Myr retriever only working as a temporary chump blocker or KCI being a
dead card in hand. Personally i am working up to getting
metalworker as that functionally works better a majority of the time for the deck in my opinion.