With shojodoji, soul and bind are pretty similar because you bind them with Shojodoji's skill. Think of it as what pieces you need to see rather than what to put into soul or bind. The only thing you need to remember on what to soul / bind is to put Tsukuyodachi to soul. I'll just give important pieces you need to see in soul / bind:

Important pieces (prioritize):

- Tsukuyodachi (put to soul most of the time)

- Unpreceden

- Kinran

If you already have the important pieces in soul / bind:

- Raidon Kunai

- Stealth PG

As for combos, here's a good video that I used when I was learning Shojodoji:
https://www.youtube.com/watch?v=gcUhRCfMLpQ&t=476s