The passion and commitment that the SuiteCRM and SalesAgility team is obvious. We run a highly customised Sugar 5.5 and have been watching the project and clear investment by SalesAgility for a few years.
Our problem has always been the front end.
Rather than having another go in 8 have you thought about merging your investment and skills with https://demo.spicecrm.io. Their project does not have the energy of yours but they have nailed the frontend experience.
Final comment - if you are committed to doing it all within the project, also have a look at the Salesforce IQ product:
http://www.infotechlead.com/wp-content/uploads/2015/11/SalesforceIQ-screenshot.png
https://static1.squarespace.com/static/54b72691e4b0c2c1fadb86f6/5a80f5fe0852294ef6112221/5a80fda59140b73f5d5788f9/1518404387695/lasso_8%402x.png?format=1000w
Thanks again for your contributions to opensource!
Kind regards
Olof