Why do not you have two devices, the first contains sensitive data that leads to the loss of your money such as the private key and other sensitive data and another that you can carry what you want as long as there is not a lot of important information on it?
You can use an old computer or use a phone to do this.
In my case, I have one laptop and one mobile phone. I usually doing sensitive things such as transferring of funds in my laptop than in my phone. I did that because I use my phone to access in different websites and install some application due to bounty compliant. Another is that, i am more confident on my anti-virus installed in my laptop since I am using two anti-virus good for malware viruses and etc.
One more thing that I want to add is give some privacy with your stuffs. Do not let anyone hold your laptop without your permission because I had my macbook before and it was filled by viruses because my colleagues borrowed it when they are making presentations. I am thankful that I have no funds yet before because if I had, they are all gone right now. It`s useless, if other people holds your gadget because they may unknowingly put some virus of it because of ignorance.