I have 210 mil to spend right now on gear upgrades and I want to be able to max my mp farming and possibly be able to do mp10 ubers with my CMWW mage friend who's running 2.76 aps gear. Where is it best to invest my money to fund this?
keep the helm a propper mempo costs 210 mil alone. personally I would say that u should get a belt with lifesteal (ik is the best imo when on a budget) possibly a ik chest (decent stats were like 80mil a couple of months ago) then you can get a 2mil neck or so that is way way better than what you currently have. beside that it's mostly a matter of upgrading everything u have and double crit on weapons will help you so much dmg wise (better gems ofc)
Get Trifecta (IAS, CC, CD) gloves, neck and rings. Depending on the amount you want to spend on those you can leave out either CD or IAS but you should maintain CC. (eg alternate between IAS CD). Trifecta Rings with +min/max/average-dmg stat are even better. Choose stats depending on what you need.
For a WW build a faster offhand (dagger / sword) is recommended.