I know Naya Burn is an established archetype, but since in your case you've decided against the traditional
Lightning Helix, it seems that you're splashing white purely for
Boros Charm (and the potential +1/+1 to
Wild Nacatl, But
Kird Ape for example could get a similar buff without needing
Plains), and while the Charm is very strong, the effects seem replaceable enough in just G/R. Even with the fetches and
shock lands, I'd suggest either expanding on what white offers or removing the last vestiges of it from this deck for more reliability and less pressure on your life total.
(Also, was there some reason besides price/possession to run
Scalding Tarn/
Bloodstained Mire before putting in more copies of
Wooded Foothills?)