Grettings community

I'm boxing a few months 10 accounts with isboxer in this desktop:

cpu: i7 2600k oc 4,2Ghz
video: GTX 580 1,5GB
ram: 4x4GB DDR3 1600mHz
mb: Sabertooth P67
HD: 7200RPM 32MB
monitor: 2x 1080p

This machine runs said setup with no issues (no Jita or blob fights accounted). In fact I believe I can squeeze in more accounts. Graphics don't matter.

But my aim is to run 24/26 and my question is if it's doable on a single machine? this one upgraded maybe? Or better from scratch? Even if doable is it worth it costwise? Maybe just get a slave? Or make of this one a slave?

None of the above? Other things to take into account? I also would like in the future to be able to run 8 accounts in blob fights.

Help highly appreciated. I'm overwhelmed in hardware, no computer savy here, please don't let me get robbed at the pc store

Thanks in advance