It has 16GB upgradable to 32GB. 16GB should be enough.
I never use LR to import. I have always used the utility that came with Canon then name and organize the folders myself. So that shouldn't be an issue.

I have to say the 4K monitor does make a difference in everything I have done so far, I guess I should go ahead and get CC and give PP a try on it. I did ask Adobe about multiple machines, they told me with CC you can have it on two computers. One can be Mac and one Windows.