✔ 最佳答案
Kind of rush, what if the ferry isn't on time?
If things run well, shouldn't be an issue.
Baggages clearance and immigration on Singapore side is rather effective, of course that also depends on number of baggages, and you may also want to call for a taxi instead of waiting.
Do check if that is a long weekend or any Public/School Holiday, may make a dif =)