Digital BW, The Print

Hello guys. 

After working my butt off for months at my day Job I going to get a 9890 Epson! 

I am now using 1400 with Eboni6 on Red river rag paper. 

But my work now needs more Dmaxs Thinking of lustre or bryta papers

Thinking of using Eboni-8 + Glop  in 9890

Is it feasible? 

Will try with the 1400 maybe. 

Also I like to know where I can get 

1.Epson Service Manual
2. where to buy Print Heads online if I ever need to change it. 

I got to do servicing and maintenance on my own cos unlike US where i live using 3rd party ink voids warranty 

Please feel free to let me know what you guys think! or advice!