I love sten. It is one of the most under talked about and under appreciated of the AAS. It is also dirt cheap... two amps in a box sells for $1.19 in Ensenada. (Halo is cheap too... $5 a box.)
The amps are light... I think 120-125mg per amp if memory serves me.
I used to boot 2 a week. That would give you ten weeks.
You probably will need at least 3 amps of the Sten a week to really see much. As far as the Halo, I could think of much better things to add to Sten, but you might have a six week cycle here.