You can't do MP10 key runs, that for fact 1. You need ALOT more then 7m to get to that point.
Advice: go level to paragon 100 and get some money + new items.
I know it isn't possible yet. I guess I worded it wrong. I guess I meant I want to be able to do the highest MP I can do by upgrading my gear with the 7 mil I have. I have a level paragon 21 wizard that I am currently leveling for more money too.