best for bonus clearing

[dark_horse]

seeing as i got a million bonus offers on the x-skins, i was wondering what was the best way to grind out all these hands to clear the fastest. is it:

4tabling .50/1 full
3tabling .50/1 6max
4tabling 1/2 full
3tabling .50/1 6max

i can't 4table 6max yet.

looks like rake accumulates faster with 1/2, is this correct? is the rake structure the same as .50/1?

i've been 4tabling .50/1 for the past 2.5 hours on Empire and, while my stats say i played 800 hands, i've been given credit for 320 hands. not sure if they changed the raked hands credit for hands where you actually P$IP or just were dealt cards. i know Euro changed it to the former as per their bonus email, but not sure about Empire.