ab initio modeling reliability and protein-protein docking

Question

[BI]

Hi. I have modeled one protein composed of peptide stretches from different proteins. I have used ab initio modeling to generate my model using phyre2 intensive search. How can I check the quality of my predicted model ( like some BI tools) and is it valid or not? And now I want to dock my generated model with another protein basically a receptor. Can anyone suggest me some good protein-protein docking software from where I can get results for publishing. Thanks in advance.