Hi im getting ready to reapply for the army as I was failed for having a back pain last July! I have no previous history of backpain it was just a one off where I had strained some muscles, however I was held back for 6months. I have to be able to carry a 10kg load for 90-120mins I no thats not difficult, but I obviousl want to weight the bag correctly so I do not have real backpain! I have no army equipment, have a good daypack and need some suitable items to make the 10kg load without it making my bag bottom heavy! Any tips! Thankyou!