Slight update. I have decided to train this as a banyan. After originally cutting the top off this tree produced nee shoots around the base like crazy. I thoughg i would embrace these in my design, i let them grow out and then tied them to the main trunk. I buried the whole trunk and then bent down all the shoots that i attached to the main trunk. From here i will feed like crazy and develop to top.
I am hoping to get a mass of fused trunks/roots etc.