Ok, so here is what I've decided... let me know if this sounds viable.
I've decided to start a single llc (ex: ABC technologies LLC) and launch an SaaS app on a separate website (serviceA.com, owned by the LLC) and treating it as a brand (and trademarking it). I'm doing this so I can operate side projects to generate revenue (i gotta eat) under the LLC while building up the SaaS site. I don't plan on filing for a dba as I will still use my LLC name on all official docs.
Is this a valid approach?