On the short time I've had the pleasure to take part on the QRSS, I've seen that I need to find a solution to the choice to send and receive.
It is of course very nice to see my signal on the others grabbers, but it is also nice to see how many you can get into my RX from others transmitter.
In addition, I have to put up a grabber system so others can take part in what going on in my end.
I see three TX (80-40-30) meters on the the same antenna (space issue), mounted on the a water tower about. 6km from my QTH. I have access to infrastructure so it is possible to turn the TX off and on the via the Internet.
Expect that the distance is large enough, that it does not interfere too much with other signals on my QTH
Thought at first to have an RX on the water tower, but there is a high-voltage line close to, with much noise

These are preliminary plans, so it will be to get them  into practice

Home QTH JO29OI

Water tower QTH JO29PH