What is the point of chopping down a tree to plant another tree? Each tree gives 1 seed, so you are not actually increasing number of trees.
I already installed 4 mods of trees and seems pretty hard to simple make a forest or grow a forest.

Hi, you can change it in the settings.
Just go to:
Settings > Mod settings > Startup > Seeds per tree
There you can change the amount of seeds you get for each tree you chop.
Eg. 2 = 2seeds per chopped tree.
1.5= 1+50% of chances

Hi,
I changed the default values, so now you will start with 1.5 seeds per tree