Hi
The recommended spacing is 6 X 8 Ft or 8 Ft X 6 Ft or 7 X 7 Ft
Do zing zag planting so that there will be better sunlight penetration and air movement (Which reduces pest/disease load)
As a basal dose you can give the following per plant (in grams)
1. Single Super phosphate - 150 g
2. Neem cake - 250 g
3. Borocol - 50 g
4. DAP - 50 g
5. MOP - 50 g
Revert back me after planting and also let me know whether you have fertigation facility so that I can give fertiliser schedule accordingly
Regards
Harish