Hey I was planning to grow some trident maples in the ground to thicken the trunks starting this spring and was looking at purchasing some seedlings from International Bonsai. There are multiple options, including bareroot seedlings and 12-15" trees that I assume are slightly older. (link: http://www.internationalbonsai.com/seedling list). Would I get a big head start by purchasing the older ones or does it not make much of a difference if I'm growing them in the ground for a few years? Thanks!