Hi,
I started with £1,500, enough for a couple of non corelated trades, but then had a bit of luck thanks to CFTR. Ideally I would suggest say £5000 in order to run three positions concurrently.The secret being to ensure your not over exposed to simular instruments and also not all trades in the same direction ie not just long posistions . I agree on stops mine are simular, still
long soyabean and copper, tempted to re-enter long cotton march next week.
Hope that helps , Good luck