This is a great way of thinking about this. Love it! I totally have the mentioned situation(s) occurring.
For me... my Regarded “Winter” is 4-5 months. (Kind of a joke.. kind of serious) So my indoor area, as well as “cold-frame” options are a huge component in my “growing seasons”... so I’ve had to “piece together” what “works” or “as I can obtain” to meet my needs... it’s tricky gaining harmony with so many variables.
I get it man, we have long winters/breaks here too. But in all honesty, without a closed system or a closed and regulated environment, you're fighting a tsunami with a tennis racket. You might catch an accidental fish every now and then, but the effort vs. reward is kind of skewed.
Those weed growers have tried it for decades, and they either made entire rooms into closed systems, or they started using climate controlled tents or cabinets. All the rest was just.. An effort.
With improper lighting your plants will end up with long internodes, an allergy to sunlight (they will burn when placed outdoors without a 2 month transition period) and there's a point where 'cutting back hard' just doesn't fix things anymore. A heap of pests like thrips and spider mites (most of which will end up being resistant to insecticides due to prolonged exposure at the source, like garden centers and stores) and possibly fungal/mold issues in your own home can be a result too.
I'm all in favor of reinventing the wheel, tires and everything else. I do however have to note that there's some 40+ years of experience of indoor growing out there on the web, and most of it failed miserably because a simple light and some fans and humidifyers just wasn't enough. Of course, tropicals are a nice exception, but they do well in almost any environment.
I too love growing stuff indoors and I have a working system now, but it's still just limping along compared to the stuff that cmeg uses for instance. I'm cool with that. I have some figs, some birch and alder cuttings and some plum and cherry on the window sill. I know there's a 80-95% chance they will die before they ever get to see the great outdoors again. That's why I put in zero effort and zero money.
With some 500 dollars I could build a nice cabinet, climate regulated and all, some high powered LED's (and yes, those cheap flood lights do work, cool white!) but over time I've spent 10 times that amount on trying to "fix and improve" a terrible system. Started with hardware store CFL's, then LED, then back to cannabis CFL's, then to T-5 neon lights, then back to LED.. Air filtration systems, foggers, humidifiers, dehumidifiers, temperature loggers, controllers, heat mats, all to find out that I have spent waaaaay to much to try and fix something that was flawed by design and mostly my own stubbornness.
I'd like people to see that lesson before they learn it themselves. It's an expensive one ;-)