dreams can come true.
having lived off-the-grid in a handbuilt solar-powered cabin in some pretty remote mountains for 25 yrs, i suggest always remembering that "less is more". when thinking about getaway places, the simpler the better.
do as much as possible yourself, learn every aspect of what you're doing, knowing you can fix it when needed, know how it all works together: water systems, energy systems, communications, construction, sewage, livestock, et al.
folks often try to turn their getaways into city-like places and in doing so, they bring all the hassles, upkeep, repairs, complications and costs with them. they find they can no longer keep up with what needs doing. and keep in mind that when living "out" its usually harder to find "experts" to do satisfactory work for you, even if you're well-to-do and can throw money at it.
i tell interested folks with the same desires as you to stop thinking in terms of what "stuff" they want (all the different energy systems running endless numbers of household appliances, or the endless number of shops loaded with which tools they envision needing...), and instead to think about how little they actually need and what they can do for themselves. that way they might actually be able to do it, and then can keep it all running smoothly as well.
besides, living "bigger and better" just means less time to enjoy why you're living there to begin with.
just my 2 cents...