If you have got an offer from RHS, then of course you should choose RHS. (except that its location is a problem for u)
RHS's teachers are much more professional. Their NET teachers and PTH teachers are of very high quality. The curriculum is of high standard. Children all love to go to school as they use activity-based teaching method.
You are right, I concern the location and pm class on studying at RHS. We also live in HFC, St. Dominic is attractive as it is the nearby , also, I feel it is not bad in their environment and their teachers are nice. I will join its pg to see their standard and style next month.
Anyway, how do you know RHS's teacher are high quality? I've attended 2 pg lessons and feel that it is compact and efficient.