Just an update, i bought conduit bends from redpaths ( $10 each ) these are a 90 degree bend i think 100mm radius..  Also some green conduit ($40 for 6m ) and some white conduit ( $28 ) from another place however that was iplex pipline brand which i have seen alot of houses using.

JObs done now anyways, though i will need to get more white conduit and extend the trench, for now it gets me past where the concrete will be.