I think I am in a sort of similar development. I like to be somewhat embedded in a tonal setting though.
But I found studying Bergs violin concerto (yeah I repeat this over and over), very helpful. My first positive experience with tonerows was in Barbers piano sonata, a tonal piece where I'm very fond of.
To expand my harmonic language, and grow beyond the romantic one, the book of Persichetti "Twentieth century harmony, creative aspects and practice" was helpful to me, orderly introducing (for me) new ways to approach (tonal, modal, polytonal, etc...) harmony.