so there's a few small problems with this that i have
first would just be royal flush's planet card being the sun. there's already a tarot card for the sun so having a tarot and planet called the sun should probably be avoided
second is that the "flush three" and "flush four" hands don't really abide by how "flush five" works. a flush is when it's five cards of the same suit, so if you're going to have new "flush hand" types, they need to have five scoring cards to be a flush, not three or four
third is that, balancing wise, flush threes and flush fours would be much easier to go for than any of the harder to achieve hand types. specifically to me, with the given numbers, flush four's +5 Mult scaling would be crazy big for a four card hand, and it's not helped by the fact that a single suit changing card could make one of the special flush hand types if you have four of the same rank in hand.
fourth, which is again balancing, is that adding multiple new hand types like this not only diminishes the importance of the original hands, but also simply bloats the planet card amounts by a large amount. while playing hands like flush fives and flush houses accidentally is pretty hard, with smaller hands like these, avoiding playing them to not unlock their plants or to simply get scoring with your already leveled hands would be fairly difficult