Epson SC-P600 custom ink set RIP

Hi,

since all of my desktop epson printers used for sublimation broke / is breaking / will break down, I decided to buy something more reliable and I am making thoughts of epson SC-P600.
I would like to put in it different inks that are ment for it. For example because there are 4 kinds of black ink.
So now I am looking for a RIP software, that would make possible to install 2xCMYK + K set, or some other combination, but 2xCMYK stays.
Here comes my question: do you know such a software which isn't as expensive as Wasatch?
It would be my first RIP, so I don't want to spend a lot of money on it and count on future orders for sublimation gifts to pay it off.

I'd be glad for any advice!

Are there chips available for this machine yet ? As for rips wasatch allows custom ink sets im a wasatch reseller but it is not cheap.

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