Please post your speed benchmark and full config when you get it working. It will be very useful for 100 gbit early home lab adopters.
Personally, I think you will not get even near 100 Gbit on your hardware, not speaking about 200. 40-60 Gbit will be max limit. 100 Gbit network transfer speed is achievable only by modern dual socket Xeons with 4-6 channel memory with faster than usual timings according to Netflix paper and my brief datacenter observations. 200 gbit from single server - might be in some tests, but not in protocol speed.