Angeline the baker is a jam classic. Both the Scruggs and Melodic style arrangements work great with the difficulty slider. If you set it to the easiest level the core melody will be revealed. It's always great to nail down the basic melody before tackling a tough Scruggs or Melodic Style Arrangement.
Learning the same song in a different key is great for your understanding of fretboard layout. Getting comfortable playing in different keys is very important for a banjo player. Most players get comfortable in G and maybe C and don't get too far outside of that. Do yourself a favor and get comfortable with those D shapes in Scruggs and Melodic.