yes you certainly have your work cut out for you.
Easy option use your CIS with the pigment and then remove the cartridges when finished thus they do not touch the printhead and wont damage them?
RIHAC I have one of there CIs systems and they are AWESOME.
Maybe chat in the $150 DIYDTG post as they have done it all and used epson printers.
You want to use
DTG ink ayway or use pigment with pre treatment or use sublimation straight onto it.
They all work just need to find whats good for you.