Planing to work in singapore. And never been to johor before. Need opinion.

1. Easy or not to find a single room to stay in johor? how much on average?
2. Rent a room in singapore, average how much?
3. Since i won't have own transport, what kind of transport available to travel to work? how is the bus fare? how many buses will i have to swap to reach singapore downtown?
4. What time best recommended to start travel early morning? Say...i work office hours. Will there be buses at night?
5. What is the average price per meal in both johor and singapore?

I want to consider all these to weight out the advantages and disadvantages. Please offer some insight.Thank you very much.

Any other good idea? Or comment?

ermm... its engineering job for fresh graduate; salary dunno yet.

i wanna consider these 3:-

1. work at hometown rm1800 (everything free of course; plus can drive car to work, give parents rm300)
2. work at singapore and stay at johor (4 hours transport each day, rent room, transport fee, also give parents rm300)
3. work at singapore and stay at singapore. (will save transport time, but take all 3 meals in singapore, also give parents rm300)

my parents still working so giving them is optional, although i would like to.