The main problem that I have is that I don't know you from Joe Bloggs. As much as I want to help you I just feel that using steroids in your emotional state would be detrimental to you and those around you. I don't want to see you get hurt after picking a fight with a guy or have you hurt someone because they insulted you and you felt superhuman and full of agression. I believe for the most part "roid rage" is a myth- but you strike me as someone for whom it might well manifest.
My advice would be to keep working hard in the weights room- knock the cardio on the head for a couple of months and try and bulk up to 11.5 stone. Then get back on the cardio and cut down to 11. Then bulk again. Repeating this will get you the results your looking for- its just a hard slog.
My advice would be to keep working hard in the weights room- knock the cardio on the head for a couple of months and try and bulk up to 11.5 stone. Then get back on the cardio and cut down to 11. Then bulk again. Repeating this will get you the results your looking for- its just a hard slog.