Sang,
If you have already made your decision, you need to have confidence that you made the right choice, and believe that your life will be better because of your decision.
If you are still on the fence, have you thought about automation? Make the tank self-feeding and self-sustaining, so you don't have to stare at it daily. This way you can spend time away from the tank to do more important things like vacations, children's plays and hanging out with the wifey. Another option would be to downgrade to a smaller tank, but I think your current tank is doing very well, and with some additional equipment, you could be able to leave it for a few weeks at a time if necessary.
Remember, you can only make your family happy if you yourself are happy. This may just be the regret of taking down such a beautiful tank setting in, but is it going to affect you more substantially than you thought? It would be far worse to feel resentment against your family months later when the tank is down.
Having a reef is one of the greatest things in my life, but more importantly is my family and loved ones. If one side of your life becomes unbalanced, of course trouble is gonna happen, maybe seek a balance between reefing and other areas of life. I don't know what religion you are, but in Buddhism, there is something called the middle path or magga, and it is a process of constant renunciation of the extremities in life. Our minds are contantly on fire with defilments of our ego, and often reefing can become an obsession, so maybe the time has come to renounce this attachment that has lead you down the wrong path, at least for awhile. You don't have to completely give up on it, just prioritize things and seek a balance.
Not sure if that's what your looking for, but I'm trying to write this paper for my Buddhism class, so sorry if it came off as too "religious"
Take care bro!
Harry