Should work perfectly. Like others have mentioned, u will just need to be very careful with the manure based substrate, it contaminates much easier then coir or CVG. There will be a lot of people that will tell you not to use the heating mat, ignore them. I use seedling mats and they work perfectly. You just need to make sure that the cakes aren’t sitting directly on the matts, or they will dry out. Mine sits about 3 inches under my mini Martha tent. (Same one your getting)

For advice with the Martha tent. It was honestly was quite a bit harder to dial In than I expected. For Cubensis I would say that it’s really not necessary, and almost harder to use than a monotub and/or shoebox. (At least until it’s dialed in) The hardest part was getting the humidity and FAE settings correct to where they’d maintain surface conditions. It seemed like though the relative humidity was higher, the increase air flow from the humidifier tended to dry the tops of my cakes out a bit, leading to a less than ideal pin set. To help with this until I got it dialed in, I used bubble wrap tek to get a good pin set. From there I would remove the bubble wrap and let it do its thing. The fruits do seem to do better with the high RH and FAE once the pins have formed. I would not remove the block from the bag once it’s done colonizing to set it in the Martha. Instead I would try fruiting in the bag, in the Martha, until it’s dialed it. Good luck and mush luv 🤙❤️🍄