I mistook what you were wanting to do, Lane. I tend to associate "lead" with rock, or blues soloing.
I don't know the tune, but I'm sure somebody does, you might find it in tab.
But one thing I like to toy with in folk soloing is called a hemiola. It's just that alternating picking that sounds like it's spilling forward, sort of. You might repeat a pattern of notes in a pattern of 3, but in 4 beat time, so that which note gets the accent changes. I'm making it sound complicated, it's not, you know what I mean.
But to use notes up the neck, you can play off an open string with it, say you're doing wildwood flower in c, you might use the high e open, then finger the b string at E also, and pick E'eeEe'eEee' and so on, the capital E being on the b string, the e is the open, and I put the ' on the downbeat. then you can move your finger on the b string to different notes. you don't have to do it that way, and you can change that open e and keep the picking pattern going, but it's a fun kind of thing to use at times, I like it.