Advice: HP 3005pr port replicator set up multiple external extended desktop screens

[llorracjon]

Just uplifted per my company's requirement to below.... so, it is what it is for me....  

HP Spectra Pro X360 G2       Product Number W4S42UC#ABA

HP 3005pr Port Replicator

Windows 10 Pro 64bit

My prior system was HP EliteBook 2570p with HP2570 Dopcking Station, OS Windows 7 Pro 64bit

I have remote collaborative and multi-function needs whilst at my home office and then take my laptop on road to Customers and company locations.  

On my old EliteBook I ran 4 external screens (not use laptop display) whilst in dock.

- One VGA (HP 25es... also has 2 HDMI connectors)

- Two USB-VGA graphics adapters (Both are HP LA1751g monitor... also has DVI-D connector)

- One native DisplayPort  (HP LA1956x monitor... also has VGA, DVI-D connector)

It worked very well for VOiP, GoToMeeting/Hangouts video meeting, email, spreadsheet, & word documents simulaneously  allowing me to flip between work items and share/un-share as needed

I want to get back as close as I can to that scenario for 4 external monitors.  I get it, the Spectra X360 does not have a dock; so my desktop approach is going to be a bit different. I am struggling to get multiple external screens.  If I could get to three external screens (with laptop screen turned off temporarily); it would be wonderful.

Situation asking for advice....  

1) I cannot figure out how to initiate DisplayPort connection from the port replicator to my HP LA1956x monitor.  When plugged in thru the port replicator and connected Spectra X360; the Spectra simply does not recognize it exists. The HP3005pr user manual does not appear to tell me anything except to plug-n-play approach.  I am plugged directly from the HP LAI1956x DisplayPort to the port replicator DVI displayport. The HD Graphics Control Panel on my Spectra x360 (and plugged into port replicator with only the LA1956x monitor plugged in) simply does not recognize any other display than the laptop display.  ... help?

2) Elsewhere, I've read that I can temporarily turn off my Spectra display and port that to one of the others... not figured out how to do that... Help?

3) I was able to get two external displays working using my current USB-VGA graphics adapters (Eclipse SEE UV-150 and J5Create JUA210).  Both indiocate they are Windows10 compatible on their respective websites. But, the Eclipse display is a bit wonky squishing everyting into about 70% of the display.  Also, I got error message of a USB conflict on one-or-both.  Windows 10 auto-diagnosed that error and prevented/removed the offending USB driver.  

-- I am willing to ditch both USB-VGA graphics adapters upon advice for a better Windows10 compatible USB-monitor adapter.... help?

A non-issue for the moment:

At this moment, I do not have a HDMI cable to connect monitor to the port replicator HDMI port.  I will address that shortley - am buying an HDMI cable.