I'm glad that is working better for you. I also like the fact that there is one less thing to clean up--the tray.
When I pour the coating directly on the print, I don't saturate the roller at all first. As the roller becomes more and more saturated, it seems a lot harder to get rid of roller marks on those last "clean up" passes. So for the first print I'll just pour on the coating and begin to lightly spread it around the print. Once it's spread out, I start putting pressure on the roller and rolling it out. For the second print, I keep in mind that I have a more saturated roller and pour a bit less coating.
Between coats, 20-30 minutes is enough dry time. You will want to wait until it is dry, and not tacky, to the touch and you're good to go. I always use a second, dry roller on the second coat. I think that you would be OK to rinse out the first roller and let it dry that same amount of time and then use it again, albeit still damp. I definitely wouldn't just set the first roller aside without rinsing it though. Once that Timeless dries on there it seems almost impossible to get it all out.