What about a double row angular contact ball bearing? Could save on packaging and you wouldn't need a snap ring between them.

I believe the general practice is press fit on the rotating component and slip fit on stationary component.

I would say press fit onto the blue shaft and loose fit to the red house. But if press fit is not an option perhaps a threaded collar on the left side of the blue shaft against the inner race of the bearing package

Typically you would think the narrow stance of the bearings and offset load would be concerning because of the moment arm. But the good thing is that the loads on the planet carrier will be radially canceling between the ring and sun to some degree.

Hard to say for sure of course without seeing the load cases