Editing a music video and kind of confused

Hello!

After taking an online course, I've just started using DaVinci Resolve and I'm starting to really like the software.
I'm currently working on a music video and there is some advice I would like to ask you. Any help would really be appreciated! (please excuse my English)

During the shooting, we shot clips using an external audio to be able to lip sync. After watching all the rushes, I’ve placed in and out markers to mark the most interesting parts of each shots. I was thinking that I would then sync all the clips and place them on different tracks to finally be able to make cuts, comparing what clips is the best. I think that this method could have worked but what concerns me is that we’ve shot 40 usable clips. I'm starting to place them on the timeline, but I realize that it might be too much for the software to handle and that it might be difficult to navigate the different tracks to choose the best shot... Do you have any idea on how to do that properly? I'm still not sure about the best workflow to edit music video. (But I know that I won’t shoot that much on the next music video…)

Thank you for your help! Here is a screenshot of the current state of the project.

I have never actually produced a music video, but were someone to hire me, here's the approach I would take.

While you're on set, feed the audio playback to all cameras so they have the same audio. This makes sync in post very simple. (And it only applies to performance shots. B-roll shots will not need this.)

Once the media is imported into Resolve, create a Multicam synced by audio for all the performance shots.

Edit that Multicam in the standard fashion. Then go through and add the B-roll shots where appropriate.

Now in your case, you may have to sync the performance shots manually if you didn't feed audio (or timecode) to the cameras when shooting.

But however you create the Multicam, I would advise taking a step back. Essentially start over. You've gone down 'the wrong path' and the best approach forward is to backtrack.

Again, that comes from someone with two decades experience producing films, but never actually a music video.