Thanks everyone for your constructive opinions, i really appreciate it, I'll consider the above advice and let you know the outcome, I have many of these to develop into pre bonsai and sell for good affordable prices to locals who want to get into bonsai, I work at a large Japanese maple nursery so I can get the materials for cheap. Only dabbled in bonsai for a couple of years now, we make many large specimens for gardens across the country budded and grafted, I am trying to get the grafts near the root flare which is a challenge when they're planted in the fields.