Hi,
To use the same IP address, bridge-domains may be needed and the ae1 & ae2 interface configured as L2 with irb interfaces as L3 interfaces for each vlan with family inet addresses.
Note: This implies bridging the ae1 & ae2 interfaces, hence STP and potential L2 loops need to be considered as well depending on the design.
For additional ae interface, you may need to increase the aggregated ethernet device-count:
set chassis aggregated-devices ethernet device-count 4
Cheers,
Ashvin