The border hop is very frustrating, it's your call but there would be no way I would do it. If you have ever crossed from Hong Kong to China or Thailand into Cambodia , these would be similar. First you have to deal with the Singapore authorities, so it is up and down stairs and then onwards to the Malaysian side where they want a piece of you. What slows the process down is the vast number of day laborers that use this crossing. last time it took us close to one and a half hours, there again it was peak time. Taxis drop you on the bridge and there is a walk involved. A geat idea in theory