Greetings Enzy-Trying to cover all the bases with one blade seems to be the age old quest.Much depends upon how strong and fit you are,what will the blade be used for the majority of the time(cutting light brush,heavier firewood,etc.)Personally, I can handle and carry a khuk from 16.5 inches to 22 inches,and from 1.5 to 3 pounds,although at the larger end of that scale it is going to slow me down,and rigging for carry needs to be looked at because you don't really want a 3 pound blade strapped to your belt. For cutting firewood and building shelters stick with a stout spined blade-chirawa ang khola,ganga ram special,m-43,bonecutter,AK bowie,etc.Any of these will knock down wood cutting chores well.On the martial arts and self defense end,the lighter,faster blades are the ticket-sirupati,gelbu,chitlangi.Their is of course overlap in type and intended use,so compromise(something in the middle)can serve multiple puroses.Good luck to you!