Hey Jake,
I've also toyed around with the idea of filling the bottles with over carbonated beer from a growler filler...
I've always found that bottles filled with a growler filler\tap, only last a couple of days, but only carbonation wise, not taste\quality...
maybe bottling with over carbonated beer would put it right at the low carbonation level we're looking for.
I might actually try that with some beer I have on tap now.