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yes:) although adding another GPU won't double the profit, more like +80% but there's not much sense building another rig for one gpu.

that makes sense. I didn't check your specs yet but with risers how many GPUs could one of your rigs support?

I'm more limited by the power supply but up to 3 GPUs could be used on this rig. I know that there are more advanced setups but I'm not aiming for a pro 16 GPU mining rig that costs more than @ned house :D

you never know ;)

now that I think about it would't it make sense to calculate how much hashrate your investment contributes to the system to determine the % pay out?

no he using the money to buy mining stuff. Shares= how much of the profit pool will you get
shares are a better,sustainable,easier to manage system

Ahh ok that makes sense... I'm learning alot

It is released now so... start investing :)