I assume you should have a 1Tb hard drive on a 64-bit laptop and you can simply have lots of different cryptocurrencies' native wallets, and  save their private keys safely somewhere else.   My hard drive has only 32 GB and a slot for an SD card and one USB slot .

I am currently trying SIA wallet which after 10 days of trying has not fully downloaded, and has occupied 8 Gb of the hard drive in the AppData folder as of yet.  This wallet is giving error messages I don't understand

SIA does not install in C:\Program Files, and  I  cannot find where it installs
The Daedalus and iota wallets are installing, after running the ,exe file, in C:\Program Files

Can I have my altcoin wallets on my 64 Gb SD card or on a USB external hard drive?
Running the program did install it automatically on C:\Program Files\   and so this may be
a matter of making a program install elsewhere, in a different folder???
And What about the AppData folder where SIA wallet has taken up 8GB disc space?  Can I change the default storage
to a different folder than Appdata? This SIA folder in AppData, worth about 8Gb disc space, can it be deleted and the
SIA wallet continue to work properly?

Sorry for dumb questions, any replies will be appreciated