Hello Todd, I am sorry to hear that you are experiencing this kind of issues.
Have you tried installing the drivers from Dell website?
Please bear in mind that our drivers are generic and sometimes these cannot be installed on OEM systems.
I would recommend using only Dell drivers. The reason why is because they make many customizations to the drivers especially the chipset driver.
Regarding the list of drivers you posted, I would like to tell you that the Management Engine updates when installing a BIOS update.
Issues regarding WiDi and networking can be reported at this community Wireless Networking
I suggest you to use RST 12.9 since there are customers reporting issues with versions 13.1 and 13.2