there are a couple of employee tenant buses to cyberport.
https://www.cyberport.hk/files/getti...Service_en.pdf
Why would your company cap the rental reimbursement scheme at $12k? I mean if you personally preferred to do 25 + 15 instead of 28 + 12, its no skin of their nose. These RRS schemes are usually to help lower the tax for the employee, at no cost to the employer, and doesn't make any sense for the employer to cap. Vice versa, if you prefer 34 + 6, you can do that too and take home more money each month but then have less tax benefit.
I wouldn't use Google Maps for Hong Kong. The hketrasport site is better. (or citymapper app as suggested).
http://hketransport.gov.hk/?l=1
There's a limit to how much of the monthly income IRD will allow to be used under an RRS (we currently have a maximum of 40% so technically there is still some stretch in OP's package). Mind you this doesn't matter as OP has declared he only wants to use about 50% of the RRS amount)
As per Claire's comment yes, you do need to produce a stamped tenancy agreement and original rental receipts to the employer as the IRD Assessor has the right to ask for these to prove that the RRS is being used according to their terms.