Vowel Harmony experiment

Hi everybody! I was trying to create a vowel harmony system for a conlang I have in mind right now. Sadly I still can't quite understand if what I'm doing makes sense or not so I'm asking y'all if you have any suggestions for me or if think that this system works.

I have in mind a front-back harmony Front: [y, e, ø, ɛ] Back: [u, a, o, ə] They harmonize exactly how I wrote them (so y->u, e->a and so on)

In addition there is also [i] which I would like to consider neutral.

Tell me what you think/suggest and thank you in advance!