The standard versions of the JPC 2.0 are based on SAPI-spec sizing, which is a military standard shape for plates. SAPI large is 10.125" x 13.25". So you'll have extra space both vertically and horizontally.
SAPI medium is 9.5" x 12.5". So while you have a little extra vertical space, your horizontal spacing would fit in very tightly (the JPC 2.0 can stretch a bit to allow slightly oversized plates).
Ideally you could get a swimmers cut version of the JPC 2.0, which is an entirely different shape and size standard primarily used by SOCOM, and very similar to Hesco shooters cut. A swimmers cut size medium JPC 2.0 would be a perfect fit for L210's.
This is an example of why people really ought to decide on a plate first and then select a carrier to fit their plates, rather than buying a plate carrier and then selecting plates to fit the carrier.