TBH I kinda like the belt when it was the other way round but yeah, it is meant to be at the back.
You might find the belt & chest rig a bit heavy as we do tend to fill pouches, you could get a harness to attach to the belt and wear one or the other, or both depending on the game style or your playing style.
I have an old British Army chest rig that I find very comfortable that I use for my aeg's, and a belt rig (not the best pics) that I use for my GBBR's (usually).
The good thing about Molle set ups is how you can tailor it to your prefered loadout, the worst thing about Molle tho is how you can tailor it to your prefered loadout & will adjust it time & time again.
As long as you enjoy your game day then that's all that matters, on my first skirmish I was in DPM with an old PLCE rig, took me ages to find my preferences.