No. It will not end with how KH began because of the 10 yr. period and I'm pretty sure BBS will not be in a 10 yr. Time Frame.
I think it will end like this:
XM will summon Terra to him. He will trick Terra and then take his body for himself so he can live on. XM's Heart is put in Terra's body, putting XM's body and Terra's body into Suspension, and now we have Xehanort. Xehanort will try to get Kairi for his studies but Aqua will protect her. Mickey shows up and helps. Aqua realizes who Xehanort is by the resemblance of Terra. She tells Mickey to take Kairi and Run but Xehanort stops Mickey and sends Kairi to another world, and at this moment Riku opens the Keyhole on DI, so Kairi appears in DI. Aqua is disposed of by Xehanort or she runs off and is incognito. Ven goes to DI to try to put the barriers back and sees Kid Sora again and when trying to seal the Keyhole he is consumed by it. Then it shows Cutscenes over time and Malificient taking Radient Garden. Cut Scenes of Mickey are shown and him Returning to his Castle knowing that he can;t do anything now. He resumes his role as King. Then we see Kairi meet Sora and Riku and all become friends. The Screen Fades and then shows them as older and then it shows Kairi fly into Sora when the Keyholes opens in KH1 but we also see Ven go into Sora. It shows Sora stab himself in HB and then Roxas standing on the Clock Tower in Twilight Town.