OP, I have re-read your thread and the most scary thing for me is how ... excited you are. If passive investment is exciting (picking collection of funds, knowing the coolest, latest, most performant sectors, etc.) it is very dangerous to your long term financial health as it allows your pleasure seeking dopamine junkie 'reptile brain' to take over.
We are pleasure seeking monkeys, that is how we are wired internally. We will optimize pleasure and minimize perceived pain/loss. However, following greed/fear instincts in investment is
- stupid
- will rob you of majority of the return
- stressful and will leave you exhausted
Imagine buying and selling properties because of the wind speed of that particular minute- who would do that? transaction costs, all of the stress, constant moving, will eat you alive. so similarly, it matters less how precise you original asset allocation and a lot more on whether you can stick to this without
- talking to friends and neighbours about next hot tip ('defensive housing','nanotechnology','bio genetics' or whatever buzzwords)
-being able to stay away from constant checking on 'how did we do?' 'how did we do against X?' (which is nothing pleasure seeking instinct of the gambler looking to 'win' and getting into greed/fear cycle)
if you are not able to stay away from constantly double-guessing yourself, from asking for or listening to 'hot tips', passive investment may not be for you to do on your own (either avoid it altogether or get an advisor who will protect you from you and from your inner gambler). if you are able to stick with this, write an actual Investment Policy Statement for yourself (what you want, why , how you will get there, what you will and will not do as a promise to yourself regardless of how tempting it may be in the moment), then passive investment is a good path to retain and enhance wealth in a way that allows you to live your life (the 'passive' part) without being it all consumed by business/other commitments.