I don't see how you're not going to like the Martin. Post a pic or two!
I'd suggest calling Stevie Coyle. He's an outstanding guitar player and teacher- he owns a high-end used guitar store in Lafayette, CA called Mighty Fine Guitars. I'm sure he'd be happy to spend a few minutes chatting with you and pointing you in a good direction. He's also a online fingerstyle instructor on PegHead Nation. I think fingerstyle is his forte. I don't know how this compares to what's on TrueFire. You should be able to get a feel for what he's like here:
https://www.pegheadnation.com/string-school/instructors/stevie-coyle
Reading tabs is much more direct than reading music. They chart what fret and string(s) to pluck.