I am a great believer in starting small and growing on success. So I see this in 4 simple parts that are cost effective:
1. Clearly define target group
2. Develop on call schedule for docs and have on call communications system. i.e. radio
3. Get the polyclinic open for ER nurse rotations and keep crash cart there.
4. Implement a seamless system that starts with front line acers who are trained and already doing the work, bringing in patient, alerted ER nurse call doc who is waiting at polyclinic, he/she does stabilization and can arrange transfer to KHMH or private hospital as requested by patient or family.
After that is in place and totally functional, then look to expand IF necessary.
All you would want in SP is stabilization and transportation.