Bluetooth experts RN52 two way A2DP - Bluetooth Headset

Hi all, I am trying to convert an old headset to wireless. Basically the headset has 2 speakers and microphone. The speakers are easy. A simple A2DP profile can handle that however I also want the microphone to work.

The headset is an ASUS Vulcan ANC. So there is plenty of room for circuits and batteries.

And the current chip I am looking at is the RN52. However from what I can tell this chip doesnt do duel mode for A2DP and HFP/HSP.

Any help or guidance would be awesome.