Good enough build? Not quite 4k defense

Hello,

Future aventurine wanter with some questions. The two builds are hypotheticals with the only difference being the LC. I would use S5 concert or S5 day one but I can't get those to high superimposition easily hence why I'm using S5 threads.

Fribbels is giving ~30% damage improvement with his S1. Obviously getting his S1 would be best but with Sunday and Fugue around the corner I'm not sure I can afford it.

Is the 4 star build good enough? Or will I be sorely missing the extra shield strength and damage his S1 provides in a wider team context?

Edit: https://imgur.com/a/PGq7E6b