Thanks everyone for the replies!
Mbgg I have checked the prices on their websites so I think I have an accurate estimate there.
Thanks for the hostel reccomendations, I would like to be centrally located so those sound quite good!
Johnah the 50NIS a day is just an average, I will probably be over some days and under on others so I just hope it will even out. And I do plan on Masada but was going to do a day tour for that.
Nakichick just out of curiosity, would you be able to share where your money was going (accommodation, food, etc?)?

