Hi,
Welcome to the community! 
The 8 weeks of metabolic circuits are an excellent way to acheive the results you want.
The free weights circuits are very good, as they were designed to go together by the people who put it all together.
Do you have the All Body XPress DVD or something? If so, look at the positioning for the Back Row, but just take a deeper stance. That's all it is.
The Single Arm Row again is like the Back Row, but you put the TRX in Single Handle mode, and then you are pulling yourself with one arm as opposed to 2 like the Back Row.
Let me know if you have any questions.
Thanks,
Justin