In terms of bundles, I already have a bundle with this pack as well as NPC's made for it: City builder bundle
Also might be worth checking out these bundles:
Ultimage builder bundle
Ultimate rpg bundle
I'm not planning to do interiors for this package in partictular, but I do have an interior pack up as well that goes with another set, which are also in the ultimate rpg bundle, ultimate interior pack
I also suggest checking out my profile page, there are a lot more options for different packs that might suit your needs :)