I am treking for 7 days from pokhara to as far as i can get and back in that time,from april 2'nd.I probably wont be able to go too far off the beaten track in this time so would it be ok to wear some chaco trecking sandals rather than boots? Also please can anyone advise me what to wear,will i need a very warm sleeping bag at this time of year and how warm or light or waterproof should my clothing be??Thanks