this works well for your rear view mirror.
K Source 13.75" x 21.5" Wide Angle Clamp-on Mirror | Product Details | Pep Boys
It's what i've been using on my Del sol and now my STI. Once mounted, I slightly angle the mirror towards the passenger side so i have a wider field of view for my passenger side blind spont.
then supplement with a driver side interior bubble mirror like you already have planned.