What would you do in my case?

Hello car friends, now it’s time again: spring! In addition, I enjoyed a new (used) car, which I would like to prepare for the first time.The following about the car: BMW E90 330i in Le Mans-Blue metallic (likely strong blue), 4 years oldTo the condition: Very good paint condition, only a few stone strokes in the front area as well as the usual micro scratchers (washing system!?)To the (previous) plan: Since I bought the LG care kit in 2006 and have a lot of it left, mö 1) Washing with liquid glass washing concentrate 2) Lacquer cleaning with liquid glass pre-cleaner 3) Lacquer cleaning with cleaning Knete – Magic Clean 4) Washing with liquid glass washing concentrate 5) ????????????????????????????????????????????????????????????????????????? 6) Sealing with liquid glass high gloss seal (3 – X layers) As you can see, I’m still unclear what to do before sealing. I would like to get the micro scrapers removed from the washing system! would be the filling polish of Petzoldt`s, but I don’t think I’ll have anything sustainable about it and most of them here are also rather dissatisfied with the result. Another possibility would be a polishing with small grinding parts!? However, I don’t have a polishing machine or any experience with polishing with polishing machine (I don’t think without making any sense in this case!?). I would also borrow one. With the blue paint I have to be a little more careful about streaking. In my previous BMW this was absolutely unproblematic due to the exterior colour… What would you recommend me to do? What would you do in my case?Thank you very much! Best regards Stefan PS: Please try to understand my decision that I want to work with the already existing products. I am aware that there are also many great products from Meguiar`s and Co.. However, it is not up to the debate here (at the most for point 5)…