basically my cars not been washed much and never polished since about 2010 and lived outside

its been worked on mechanically loads so its matt white and covered in black marks and finger prints

i have a few products on the shelf ive just washed it with tfr and fairy liquid get all the crap off and put some demon shine on as abit of protection


next thinking of mopping using some g3 to cut through the matt and marks/scratches
then megs machine glaze to give it some shine
then megs polymer sealant

will these be enough or should i use something else?