Are you using the same Frame? Here is a basic list of the parts I used but if you have specific questions or would like photos please let me know. There are some really useful YouTube videos on how to connect it all up but you cant go too wrong. I even mixed the new and old brake/tt bar shifters.
My build went very well, used the;
R671 shifters on bar ends, two buttons each side
R8060 TT brake levers with one button each side
5 Port Junction A which is currently under my stem but will hopefully hide in a bento box
Junction B box which connects front and rear derailleur, battery and Junction A cables, I hid above the bottom bracket.
Bt Dn110 Battery which I fitted in the seatpost using the specific seatpost figment (sold seperately)
Then the standard r8050 front and rear deraillieurs.
Everything worked perfectly with simple plug and play, let me know if I can help more.