This mod is really amazing and very interesting to try out. Many of these trees are damn big, I could build a survival base in them. The trees grow everywhere adding a lush like landscape everywhere. Then in creative inventory you have the fat growing saplings which grow trees in an instant. They are really worth a try.
But it lags a lot at first as too many trees have to grow at the same time.
I have a suggestion for you that could you add some other trees too, like mango and dark oak tree.