There are no stock answers for your questions. Waaaaay to many variables.
Most of my hand quilted queen size quilts take me a couple of years to do and that is working on it fairly steadily. I only have a lap hoop.
On my DSM I did a 60 x 60 in about 3 weeks working on it pretty much only weekends so I guess that would be 5 or 6 days of meander FMQ and echo quilting. I also did one the same size with a simple cross hatch in about the same amount of time.
On the LA that is where I have the biggest variable. If it was a panto, I could finish it up in a couple of hours. Same if it was a simple all over meander. But if there was SID ruler work, custom quilting of different designs in different areas it would take me a lot longer. I only get to really quilt on weekends. Very rarely do I have time to do it on weeknights so the quilt stays on the rack for anywhere from 2 to 6 weeks.