Stacking Multiple Multicam Sequences

[#1]

I shot a music video with 4 different looks for the same song. I made 4 succesful multicam sequences for each look. They each cover the entire song. I did it this way because there are huge dance numbers in the piece with many camera angles.  My goal is to now stack those multicam sequences and selected moment to moment from to pre-edited aforemention multicam sequences. Is this at all possible ?  

My second option is to render each sequence seperate then stack those. But I am wondering if there is an alternative.

[#2]

I shot a music video with 4 different looks for the same song. I made 4 succesful multicam sequences for each look. They each cover the entire song. I did it this way because there are huge dance numbers in the piece with many camera angles.  My goal is to now stack those multicam sequences and selected moment to moment from to pre-edited aforemention multicam sequences. Is this at all possible ?  

My second option is to render each sequence seperate then stack those. But I am wondering if there is an alternative.