That is a lot of stuff but I can empathize with having some backups to important items for extended trips. I try to minimize it though by having more than one use for an item. My backup tire compressor is likely a bicycle floor pump since we're also likely to have bikes. A backup tree saw is likely a hand chain saw or perhaps just having very low tooth count hack saw blades in the tool kit. I was going nuts trying to think through every scenario until I just embraced that as long as I have survival covered I'll McGuyver the rest.