I learned that:
1) I still need lettering practice.
2) I have no idea how dark the ink is supposed to be. (I can get one letter per dip in a deep black, or most of a line in a lighter grey.)
3) It's very tempting to stick with markers since I'm not doing scrollwork or anything.
Also, on a separate note:
1) Good markers make a difference. (I bought several different ones at the art store and I swear my lettering improved immediately.)
I haven't yet dug out my sandpaper to try 'fixing' the Speedball nibs, so maybe Take 2 with them will go better. But, as I was told, using the nib is really a separate skill from making the letters, so I shouldn't be too surprised that it looks like two steps forward, one step backward.
I've also been looking at the history in the Drogin and Harris more carefully, and looking for MS examples in some of the Anglo-Saxon history books I have. I'm coming around to the idea that the hand I should really focus my time on is Insular Minuscule. It's appropriate to the 7th century, especially for non-Bible stuff like I'm writing. Insular Majuscule looks neat for highlights, but also looks really complex for a beginner. The other big showboat hand appears to have been not Uncial so much as Artificial Uncial. The more I see of it, the more I like it, too... but again, complex. Lots of pen-strokes and serifs and all. I'll save it for later.
Something like Roman capitals or one of the insular caps-lock header fonts should do just fine for titling poems and songs. Since I don't have a handy ductus for the insular capitals, I'll probably stick to the Roman ones for now.
My mother-in-law also suggests downloading appropriate fonts, printing things out, and using a light-box to ink it up. :) She is an awesome fine artist in her own right, but prefers to save her creative energy for the ornamental capitals and illumination. It's an idea, and I wouldn't object to having the right fonts handy for last-minute A&S applications, but I think I'd rather learn to DIY.