The 'devils' are in the details ...
setting up Moodle 4.0
Would recommend Linux - Ubuntu is a good choice.
https://ubuntu.com/about/release-cycleMuch of the docs on moodle are of Ubuntu
Initial install of 4.1 done via
git ... much easier to update. It is command line only but really doesn't require a degree in 'rocket science'.
2000 learners on our system and around 70 compliance courses
That's really a small site and could reside on a single server but depends upon content and usage. IF you are seeking to purchase your own hardware, that requires some technical stuff and more research, but ... and this is ball park:
All in one server ... code + DB for the Moodle + storage on same server.
Memory (expandable): 8-16 Gig - to start
Space: 1TB data drive/partition (sounds like too much to begin, but been my experience that 'used' Moodles only grow ... they don't shrink.
Above could be on VMWare or other virtualization that would allow expansion of memory easily.
currently set up in Talent LMS)
Take it you've compared modules - and what one is using on Talent now is available on Moodle either as core or an add-on-plugin.
intergrate with our currently dynamic/dimentions system along with our 'other' LMS: Access Planit
This item is the one that more than likely require some programming - depending upon integration desired.
While I don't think a Moodle Partner does remote support ... might check with the one nearest you:
There is also Moodle Workplace
'SoS', Ken