Power for 1 Device, 1 MCU, and 2 modules
If 3.3V , 1.2V is used for any analog , you may want an LDO from 5V DCDC or special RLC filters on 3.3V DCDC + ferrite snubbers.
1.2V needs an LD0 from 3.3V for regulation.
Since LV uses only 1W, no issues other than glitch clamping diodes, shielding from high power Flyback. and balanced shielded analog inputs.