Haha! It was getting confusing!
If your reason to place them in the tank is so they can share a heater, get a shallow plastic tub and fill it with a few inches of water, enough to cover the heater and place the beanies there.
It's not good for them to claim territory in the spawn tank because it may lead to aggression.
Yes, wait until the day you are ready to place them in the spawn tank to set it up. It will keep the water clean. Do place plants that day so infusoria starts to produce.
Once you have the tank set up, place the male in and the female in the beanie inside the tank. At this point you need to observe and be very patient. Wait until they demonstrate signs of readiness.
In a day or two you want to release the male, some people just plop them together but I'm always to afraid my HMs will hurt eachother fins (they are so pretty) so I wait until I'm ure they are ready.
After you release the female it can take days for them to spawn or it they could start in a matter of minutes.. every pair/spawn is different.