Hey.
Thought I should mention this.
Trading 8 pairs or more intraday with a good setup and trade management rules is fine, BUT...
...The more the opportunities, the larger the risk and allocating more than 3-5% (even this amount is large) when trading more than 8 pairs is an attempt to commit suicide.
Why? Just take the simple situation in which ALL of your pairs have two losers one after the other: you will have 16 losses in a row and with a 5% risk on each trade you are down 80%.

GOOD LUCK!
Thought I should mention this.
Trading 8 pairs or more intraday with a good setup and trade management rules is fine, BUT...
...The more the opportunities, the larger the risk and allocating more than 3-5% (even this amount is large) when trading more than 8 pairs is an attempt to commit suicide.
Why? Just take the simple situation in which ALL of your pairs have two losers one after the other: you will have 16 losses in a row and with a 5% risk on each trade you are down 80%.

GOOD LUCK!