evening folks,have a quick question regards my breather as follows

i have a spec-r one with catch tank,as i am rebuilding the bloody thing i have got breathers to either side of the block,now i did intend to also put one into the top of the cam cover but could i instead pipe a return to the sump under the oil level & still run one to the catch tank

oh by the way the seperator has 4 ports 1 on the left,2 on the right & 1 underneath (which i propose to run to the sump)

am i wasting my time thinking this

ta