Maybe something like Bookman for that 'victorian' feel?

http://www.myfonts.com/search/bookman/fonts/

One option would be to echo your Tuscan terminals in a restrained low contrast text typeface such as Zilvertype http://www.myfonts.com/fonts/canadatype/zilvertype-pro/ or Erasmus http://www.myfonts.com/fonts/redrooster/erasmus-rr/
More fonts with similar semi-Tuscan treatment http://typophile.com/node/119951
Don

Or you could simply use a typeface that suggests reliability, integrity and stability, such as Clarendon Text https://www.myfonts.com/fonts/canadatype/clarendon-text/
This would contrast with the swirly thoughts in the sky impression conveyed by your lettering.
Don

Perhaps a retro-looking contrasted sans?

Folowwing up on Riccardo's suggestion "Perhaps a retro-looking contrasted sans?" you might consider Globe Gothic from circa 1900 Digitized https://www.myfonts.com/fonts/lanston/ltc-globe-gothic/
Don

Thanks, donsho! I don't know how I skipped over Clarendon — somehow I tried Century and didn't make that jump to Clarendon.

Erasmus has a nice optimistic stoicism to it with the angled terminals.

Bookman always feels like the 70s to me, but maybe that's just the outsize influence of the ITC version.

Globe Gothic is a good thought, but I dunno, the digitized version looks so...digital.

Anyway, thanks for all the help, y'all! We're hoping to send this thing into production next week and you've helped me get there. Look for it soon in your local purveyor of smart, funny gifts for smart, funny people.