new Sctos pines

These are two Scots pines, Pinus sylvestris. They are very old and I like the movement and character of the trunks very much. These will become great bonsai. But at the moment they seem too weak to me to start working on them. They will have to gain health within the next three years. How? Water agressively at least once EVERY day, feeed aggressively every ten days with lots of nitrogene. Place in full sun.