I've literally just got back from my first tour with my husband - we covered 1,124km in 13 days with camping equipment and stove etc. Don't know what it weighed, but it fitted into 2 rear panniers and a 30L rack-pack that clips onto the rear panniers. Tent & sleeping bag were in the rack-pack, along with waterproofs and lunch. (We are on mountain bikes, not tourers). We didn't use the front panniers that we had purchased for my husband's bike, there was no need and not enough equipment to put in to them.
We found that 80-110km was what we normally did, leaving the campsites around 9am each morning - not planned, it just worked out that way, we had no expectations and night stops were arranged around lunchtime depending on how we felt. We fell intoa routine of stopping around 11 am for a break and 12:30-1:30pm for a lunch, again around 3pm for another break. Sometimes we were camped by 4pm, 2 nights we had evening meal and carried on to the campsite arriving around 8 or 9pm.
We didn't have a rest day, but there was one day where the weather conditions/wind (very strong head wind) was knocking me off my bike, so we quit at 2pm, so effectively gave us a 1/2 day off.
We used the ferry home as a rest day and although tired, would happily do it again and are already planning a week's trip for October.
I found that 110km was more than enough for me (I'm a severe asthmatic), but 80km was easily obtained.