I am confusing which one go first or is every step I list is necessary

1. Clay --> Opti-Seal --> Wax it Zymol Glasur Glaze
Or Opti-Seal is not necessary since I plan to use Zymol GG?

2. Clay --> HD Cleanes like Autoglym Super Resin Polish --> Wax it

 

And seem the Autoglym SRP is not remove the swirls, but hide it
so should I change to use like OPT Poli-seal?

 

you can do it all if you want

clay->polish->seal->glaze

clay is first
polish right after that
you can seal or glaze, but since u have both u should seal then glaze.

 

My suggestion would be to do a clay, polish, sealant and then a wax. If you can skip any step I would easily pick the wax because the sealant will provide more durable protection.

For the clay bar I would suggest the:
Clay Bar
DI Packages DI Clay Bar and Clay Lube Combo

Polish
Meguiar's Ultra Finishing Polish M205 or Menzerna PO106FA Nano Polish (Super Finish)

Sealant
Optimum (OPT) Opti-Seal or Blackfire Wet Diamond with Polycharger

Wax of your choice

The polishes I listed will provide significantly better results and really make the surface shine, then the sealant will enhance that.

 

The reason I pick SRP or Poli-Seal is I do not have PC, everything by hand only
So I think M205 is not fit my need...