How many games do you play all at once?

Personally, since it's our vacation I do 5 games. Two ww3 4x speed, two overkill 4x speed, and one ww3 normal. The reason why I don't do normal is that it's too slow for me and takes too long to progress and many players quit around 10th day or 15. I love the action 4x brings although it really really needs A LOT of attention. The way I manage it is by visiting it about every 1 &½ hour that's like 6 in game hours of window. Also, I'm a college student and once school starts I decrease it to just 3 games 1 of each of those category but on 4x since I found out I can manage it well at that rate. What about you guys?