As much RAM as you can afford and a SSD, bigger the better too as Adobe products love to run things in temp files and can soon full up a 128GB SSD with a multi layered asset file open.
Mine is a:
2.8 GHz Intel Core i7
16 GB 2133 MHz LPDDR3
Radeon Pro 555 2 GB
Intel HD Graphics 630 1536 MB
256...
I've only just upgraded my 2011 MacBook Pro to a new one with touchbar because of a GPU failure, my 2011 air is still going strong.
I use Office 365 and Adobe Creative Cloud, both on monthly subscriptions. You may not need CC, depends how involved you want to be with the web and artworking side...