Hey there hudman whats going on.
I'm thinking it's a lot simpler than it's being made out to be, and your on the right track with going with a higher yielding strain the Cali-O. I'm in a very similiar boat with the yield thing. I harvest one crop each month out of one of the budrooms that I have and I would love to get a lb each time, it's close but it's not quite generally between 12 and 15 oz. And like I said earlier I try dif techniques and such and run several dif strains but the thing is,,,none of my strains would really be considered big yielders as I opt for quality first. In that flower room I use one light and about a 36 sq ft footprint. Everything is stripped from the middle of the plant down so there is pretty much no larfy buds.
Sooo,,,what I am doing to increase my yield (after getting my rooms dialed in pretty tight) and hopefully produce some dankness on par with the phenos that Ive hunted down over the years, is add a couple of new strains to my stable. The mother of one of my strains is Cali-O as well lol. The breeder is Chimera and he has a few higher yielding strains that are supposed to be quite dank. We shall see,,,,I germed 32 Chimera beans last week and now I have 32 little babies to hunt down the best ones.
Pretty stoned on some Ice this evening my friend
Out of about 6 or 7 strains that I run this particular cut is pure rocket fuel!
Catch ya later
Oh and your ventilation issue is going to need to be resolved. Subcool has a thread call Get your ducts in a row that may help a little. And your climate should not have to much to do with it. Sounds like we have similiar seasons,,,,hot summers and brutally cold winters. Eighteen inches of snow right now on one of the peaks just a few miles from my house lol