Why?

Look for GPUs with more memory. My choice is the AMD 7900 XTX with 24Gb.

Both are fine, take the easiest.

xD

Man, at this point you should think about your treat model. Are you a high profile target? If so, choose security over convenience, but if you only want your privacy, you probably can have a comfortable balance between security and convenience.

I use keepass2Android.

Bitwarden have a good balance of security, price and convenience. If you want more control and less convenience, KeePass.