1 Decide Pairing

Hello guys, I was very confused about who should I choose Hailey or Alex so, please give me your Suggestions and if I should make it a Harem or not but my vote is for No Harem because it will be impossible in the real world.

And give me suggestions about how should their relationship should progress.

I am thinking about changing Alex's older appearance. please from these three photos or suggest some of yours.