SRP, EGP and the Ultra Deep Shine will not all work togther.
You can either do SRP and EGP
or
SRP and UDS.
The EGP will not bond over the UDS, and UDS after the EGP will remove the EGP.
Use the Paint Renovator with care it can be fairly harsh and induce smaller finer marks while removing larger ones.
Wash
Paint Renovator as needed.
SRP
EGP x 2 would be my route
You could always invest in a nice Carnuba wax.