Help needed CB engineering down pipe

[07commander]

Help with Catless exhaust.
I got a Catless dump pipe from CB engineering and also getting rid of the DPF.

I currently have the O2 sensor above the down stream cat then a temp sensor in the middle of the cat and one after it before the the DPF.

The pipe from CB has the O2 where the 1st temp is and the second temp is the same so my question is.

Do i need the both temp's anymore?

Or do i fit it in between whats there and have them all close together?

Or move the O2 up and fit the 1st temp where the O2 is so it all would be in the same spot as it previously was?

Thanks in advanced