Bit of progress, most of the time was spent re-timing stuff using the sequencer, works a lot better yeah and stuff is consistent now. Thank you again @NickR and @Mildnight in the discord.
I re-did my block out using a sequencer and have a better idea of what I am trying to achieve but not entirely sure how to do a floor-breaking effect, I see some people online using Houdini to simulate/bake an animation and use that, Might try that next.
I want to add some effects to the anticipation of the animation, but I find it still hard to design effects as I am not entirely sure what is possible within my skillset 
I feel caught somewhere between imposter syndrome and the dunning Kruger effect.
I have been wondering if there is a set pipeline when making effects like there would be when making props/ other assets. Eg, block out > low-poly/highpoly> UV > Bake > Texture
Also huge thanks to @Niels whose VFExtra plugin helped me make the meshes. Great tool and would recommend it to anyone if by any chance someone isn’t yet familiar with it yet. >>VFExtra for 5.1