Agree with ZO. Taking test at BBDC should be easier than other DC because of the traffic condition. One more problem you might face if you are taking private is the booking of the circuit. Priority always given to DC students first. My instructor only managed to book 2 sessions for me before my TP. Luckily never 'kana' any point during the circuit round.
Did try before for 1 week without feeding due to oversea trip. As for the salinity, top up water to 1.021 before I left. By the time I came back, it was around 1.026.
All LS reported during the first 'master parade' when I reach home.