In what ways will this differ from picking any of the sources clustered at the top of the Ad Fontes Media bias chart? Those are all vetted journalists, too, and I suspect you'll end up pulling mostly from them.

The problem that you'll face comes from the fact that other sources also want to be considered "vetted" but Ad Fontes considers them less reliable. Those sources accuse the mainstream sources of bias (and in fact usually consider the term "mainstream" a codeword for "bias".)

You seem to be stuck with the same problem they have. If you're inclusive, you'll be accused of publishing misinformation. If you're exclusive, you'll be accused of bias. Probably more by one side than the other -- it wouldn't even be a case of "I'm leaving out both sets of extremists so I must surely be moderate".