See? This is great as your #50 deck because it is your favorite deck to play. You know how to play this deck the most and thats what makes it so fitting. Also I would recommend to main deck 3x laundry dragonmaid it is a level 2 aqua and can mill your deck
Yeah my bad its not aqua BUT if I were you I would take out 3x of any one of the trap cards and put it in, getting the Paleozoics in the graveyard generates a lot of advantage - I don’t think you need 9 solemns but this is your deck and I am more of a competitive player but if you are interested in playing this deck for fun/casual play go ahead but the suggestions I made are for making a the deck a little more competitive and meta relevant by generating advantage off of a single card.
GY set-up for Paleos isn't the most important thing, you should be able to send a good amount to GY and then recycle them back via getting detached as XYZ material. I'd much rather have a Solemn or something like Warning Point than Laundry.