Chev -
The EFI bundle with Epson is extreme overkill unless you absolutely need the 1-Bit Option. Otherwise, Fiery XF (98% identical to Colorproof XF) can be purchased (with Color manager and Color Verifier) for well under $5K. (without any discount). (The EFI part of the Epson bundle is around $4,500...I think.)
You will need at least a 1-2 day on-site installation and make sure you understand who will be supporting your system. My compnay does sell EFI and we do offer installs and support. I can also say with certainty that CGS is an excellent compnay with first-class support and service. Whatever you buy, just make sure you know what is going to happen after your purchase. many resellers who offer the EFI/Epson bundle will not offer much value to you. Some do, but you need to make sure.
Happy to help....Ian