My comments are in regard to the Fresenius Liberty cycler - I have no experience with others. The drainline can be cascaded (using multiple drain lines) to get up to something like 40 feet. Also, there is a cartridge available which puts you on a 20ft leash instead of 10ft.
Keep your hands clean, make double sure NOTHING comes into contact with your open transfer set and you should stay fine.
I also have my line on the side I like to sleep. What helps so I don't roll on the line and set off an alarm is to take a pillow, put it next to me long-ways, and have the line underneath. That way if you roll, you roll on the pillow, not your tubing.