That root ball is what's gonna be tricky to get it to work in a bubbler. When using net pots, the roots grow through it and some of the rocks, and then the huge ball mass of crazy roots develop in the water... so if you tried putting the already huge root ball into a net pot, it'd have to be big enough to hold it all and with enough room left in it to support the main stem with rocks. Then depending on the water level, you'd have to wait for roots to grow down into the water or keep the reservoir constantly topped up so the rootball in the pot will be in it. Since you've just started flowering I'm not sure how much more the roots will grow and it's not the best time for the plants to be using energy to seek out water, and of course the shock at this stage can slow it down.

Would be much easier to have bought some stuff to set up a drip system to what you already have... of course, you were planning to have the bubbler system sooner. But, hey, transplanting into a bubbler isn't impossible, it's just a bitch to do if it's grown big.

They do look very nice though!