Edit footage to make a website video background

I'd like a make a video background of me installing an electric vehicle charger. I filmed about 90 minutes of footage.

The job is to cut out most the footage to be left with only the parts where I am actually directly working on it. Will probably cut down to about 6 to 10 minutes.

Then merge all the files together and possible increase the speed.

All sound should be removed, no need for any music as it will be purely background.

Content is 12 files totally 6.6GB, will be shared via dropbox link.