Hello sir I'm Mobile application developer.
I have developed more than 15 applications in my experience.
I have read your project requirement it's very nice I have already developed ARcore demo application using AR core library. and make many customisation in this application base on client requirements. if you want to show this application than I will share you. but one limitation in AR core library it's working on selected devices like Samsung galaxy S8, Google pixel series.
also I have developed another AR base application for my company. this application is developed using AR toolkit and LibGDX.
please contact me I will give you 100% result.
because I have work 2-3 month on AR library.
thanks.