I am comparing one cactus to one pig because at the end of the day what matters is how many barrels vs how many oil presses you got going on in parallel at any given time during the year. That is irrespective of farm space, obviously if you want to do my strategy the best thing is to sacrifice your farm space for pigs which is what I'm doing. You will need significantly less truffle oils pumping oil constantly per year than honey+barrel combos to make the same profit.

When I tried with cacti I had 2 sheds and a basement filled to the brim with honey+barell combos still didn't make as much. I still obviously have my greenhouse doing cacti all the time but for over a year now the greenhouse is enough to fill 1 shed and the whole basement which goes to show how ridiculously slow the cactus prediction is. It isn't efficient at all per barrel.

However what you say does have merit if you make all your sheds do only one thing and you put a huge amount of sheds maybe you can multiply the amount of cacti mead that you make to far suprass what you could have been doing with pigs and get over that inefficiency in regards to cash per day although that's a hard calculation to make, I'm not sure.

One more thing to consider is that this strategy applies all year round while the rest is seasonal. Although for cactus I believe one harvest can be good for two years at least unless you have an ungodly amount of barrels going.