FSX and iMac

Hello there I know that this is asked very often but I was wondering if my new mac that is coming will work very well on fax 50+ fps with pdmg 747 at high or ultra graphics. The spec are cpu:4.0GHz Quad-core Intel Core i7, Turbo Boost up to 4.4GHz memory:2GB 1600MHz DDR3 SDRAM - 4x8GB storage:3TB Fusion Drive graphics:AMD Radeon R9 M295X 4GB GDDR5. Computer is the retina 5K mac. I would really hope for a reply soon since i am getting the new computer soon and it would help influence my decision. I probably won't use much of add-on scenery but will use pdmg 777 with active-sky and high or ultra graphics also with ultimate traffic maxed out or near max. Thank you