I've tried to indicate regional primaries within pods. Numbers are representatives (ie population)
First 4: 4 states, 16 representatives.
Small States: 14 states, DC, plus territories, 25 representatives.
X Pod: 16 states, 126 representatives: Upper Midwest 2, 16; Border 5, 32; South Central 4, 22; Texas 1, 32; West 4, 24.
Y Pod: 9 states, 131 representatives: California-Arizona 2, 61; Upper South 4, 42; Northeast 3, 28.
Z Pod: 7 states, 138 representatives: New York-Pennsylvania 2, 48; Midwest 3, 52; Florida-Georgia 2, 38.
I would swap Indiana and Maryland which are isolated within their pods. Maryland could be part of the Upper South or the Northeast group. And Indiana could be Upper Midwest or Border.
The February pods only have about 1/10 of the population, and if SC and NV go on the Saturday after NH candidates will have to devote some time to these states, especially if Nevada switches to a primary. Better yet would be to have a lottery to decide whether SC and NV go before IA and NH or after.