New IT System

We are a small manufacturer and need an up-to-date IT system. Needs to cover both worker activities for engineering and administration, and, light manufacturing. I'll toss in physical security as well, since I'd like everything to integrate together nicely.

The company has 50 employees. We'll be keeping it under 100 over the next 10 years.

Some of the big blocks we need:

- MRP/ERP system as the backbone. Manage BOMs & procurement of electronic components and subsystems. Needs to integrate with SAP-scale systems at our customers and vendors.

- CRM/RMA

- Engineering support including CAD systems, Engineering Project Management, Version Control, PLM. Needs to integrate directly with MRP/ERP system.

- Standard cubicle+wfh+remote workforce platforms:

   > Mobile computer, Windows
   > Phone (all mobile?)
   > E-mail
   > MS Office

 - Physical Security
   > Employee Badging
   > Secure entry
   > Visitor Badging
   > Security Camera
   > Alarm system

I'd like to utilize cloud where appropriate. We need to have a business continuation plan that shows we can relocate and be up and running in 2 weeks after a disaster.

I'm looking for any best practices or modern approaches to assembling all of this.

Thanks for any guidance you can offer!