Lloong time ago I brought about 17K ( helped every one)  but the wallet was too big.

Situation is different, too much cash may make you suspcious and ask for proof of income ( there can be any reason to hassel you here in exit as well in Nepal, You may be able to satisfy exit one but once you get envolve in Nepal may be a bigger hassel). We need to learn lesson " do not take risk for nothing ". suggest not to to exceed over 10000.