It is possible to camp along most of the Augustine Camino except at Faversham and Aylesford Priory (where the cost of B&B is relatively modest). Some of the campsites have restrictions at busy times so it is worth booking ahead.
You can always combine camping with baggage transfer to keep the weight down.
Day Two – www.coldblowfarm.co.uk/camping
Day Three – www.palacefarm.com/campsite-kent-downs
Day Four – There is a bunk barn at Brenley Farm, right on the route just after Faversham www.brenley-farm.co.uk/homepage/bunk-barn
Day Five – www.campingandcaravanningclub.co.uk/campsites/uk/kent/canterbury/canterbury (Alternatively there is a Youth Hostel (www.yha.org.uk/hostel/canterbury)
Day Seven – www.nethercourt.com