I have a roundneck resonator but I bought an extension nut for my old flattop and am learning Dobro licks on it. I too am now GASing for a laptop/squareneck.
Have you been listening to anything with Jerry Douglas lately? That always makes me want to acquire and learn to do something worth a damn on a Dobro/National or more accurately an affordable facsimile thereof. Then I remember that I need to just get better at playing regular guitar first.
You have good taste my man. Can't go wrong with Mr. Beard.
Rec you start w some Josh Graves before tackling Douglas.
Also look up Jimmy Heffernan for some good instructional material.