You can fill in your remaining days in Nepal with a wide range of activities. Discover some days the jungle in one of the nationals parks in the South of Nepal, go enjoying the shores of Phewa lake in Pokhara or visit the cultural sites in Kathmandu Valley.
It is not necessary to have experience at this level: anyone in good health and fit enough to enjoy a good hill walk can manage these treks. The Easy Treks Usually are short in duration and at lower altitudes. However, walking in Nepal always involves an effort: trails are rarely flat and you still have to ascent and descent quite some times.
Normally you walk for 4 to 5 hours during the day.