This is not a right place for that.
The compatibility guide will tell you what all CPU is supported with which all features.
You have to check with your requirement and then your local sales person and ask him for a quote.
With a budget of 1300 and the need for 2 videocards and the storage you are using, I am assuming this is for a home pc or a lab? As stated above, just go to a local supplier, or check Supermicro etc for options.