Well done on the gully gold and in finding a new friend!
You obviously have some skill in panning. The bits showing in your pan show a nuggetty character so I would be encouraged to keep looking in that area. Maybe even widen your search away from the gully and check if there are any similar bits in shallow ground nearby. If you find gold even small bits in soil that would be an ideal spot to detect.
Regarding detecting, your chances of finding your first nugget of gold will be much increased if you concentrate on finding small nuggets in shallow soil which are much more numerous than larger bits. By small I mean shotgun pellet size or less.
I cannot comment on the capabilities of the Equinox, but modern detectors should be able to detect those size nuggets. Practise with your detector until you can comfortably identify a shotgun pellet signal. If you can’t, I fear you will be struggling unless you are extremely lucky to find a larger bit. If you can try to borrow or hire a 2300 for comparison you will understand the difference a specialty gold machine can make.