Bluetooth Speaker Playback and control by using Du

Question

I have researched a lot and yet have doubts with respect Bluetooth dual mode accessory working with iOS device. help by any expert who has experience in the following case is appreciated.

i need the feasible solution which can get the work done and App should not be rejected while uploading to app store . i have stated constraints and my solution let me know if this is valid .

Existing Resource : i have a Bluetooth speaker which is MFI Certified and supports A2DP and AVRCP profiles , it supports BLE as well as BR/EDR and has 4.0 spec implemented .

problem statement : app should play song in speaker as well as provide AVRCP controls without using iAP2 profile.

i have thought of following solution : 1)Assume that Bluetooth speaker(EB/EDR module) is connected to iPhone in Settings , My app has UI to show list of songs present on phone . when user selects song i will play a song using AVPlayer in My App which will inturn start playing on speaker because of A2DP . song playback using A2DP

2) while song is playing ,App will send play/pause/stop/forward/prev commands using custom GATT profile through BLE. AVRCP controls using BLE custom profile

Bluetooth chip developer doesn't have enough time to implement iAP2 protocols, but he is ready to implement Custom BLE profiles for providing alternative to AVRCP profile.

question 1) Solution i explained above is optimal one? and will it pass APP store review process ?

question 2) is there any other better solution ?

question 3) any example of bluetooth Speaker Apps which have this implemented these features?

question 4) can i use External Accessory framework API's to accomplish AVRCP controls?
i guess Accessory should implement iAP2 profile in order to work with iOS External Accessory framework API , correct me if I'm wrong.

Thanks in advance.