If you use someone else's textures, when you write them and ask them for permission to use their texture you have to let them know if it is for a resource mod or a house mod.
Me personally - any textures I make for your mod would be no problem, do what you want with them. I just make them in Gimp using images off the internet, anyone can do it.
** Oh, I was amazed to see how closely our thinking is in houses, we have some exact same usages here! Even to the Dwemer porticullus used for a floor grate! I'm not kidding, look:
http://i.imgur.com/ccenBG9.jpg
An example of what I did for my house showing just the panels you used in the above screens:
Big round window (also retextured the overstuffed chairs if you need furniture done):
http://i434.photobucket.com/albums/qq67/Maxical1/TESAlliance%20Homework/Skyrim%20Current%20Lesson/2%20Interior%20Final%20Exam%20House%20Mod/MasterBedroom_zpsa4e60c47.jpg
Examples of two of the Panel Pieces from your screens:
http://i434.photobucket.com/albums/qq67/Maxical1/TESAlliance%20Homework/Skyrim%20Current%20Lesson/2%20Interior%20Final%20Exam%20House%20Mod/Library-ParlorArea2_zpsd81ca5b8.jpg
The third panel piece from your screens:
http://i434.photobucket.com/albums/qq67/Maxical1/TESAlliance%20Homework/Skyrim%20Current%20Lesson/2%20Interior%20Final%20Exam%20House%20Mod/Armory4_zps190518c0.jpg
Arches retextured:
In Marble:
http://i434.photobucket.com/albums/qq67/Maxical1/TESAlliance%20Homework/Skyrim%20Current%20Lesson/2%20Interior%20Final%20Exam%20House%20Mod/MageArea_zpsd246ca41.jpg
In PanelWood:
http://i434.photobucket.com/albums/qq67/Maxical1/TESAlliance%20Homework/Skyrim%20Current%20Lesson/2%20Interior%20Final%20Exam%20House%20Mod/DiningArea2_zps69c0e2fb.jpg
If you want furniture/baskets/misc items (also the bathtub, it was made from dirty stone fort stairs):
http://i434.photobucket.com/albums/qq67/Maxical1/TESAlliance%20Homework/Skyrim%20Current%20Lesson/2%20Interior%20Final%20Exam%20House%20Mod/MasterBathroom_zps1be34c5b.jpg
Clean plaster - I couldn't find exactly what I was looking for in clean plaster, so used marble for mine; but I can make some clean plaster for you if you like. Here is an example of clean plaster (my own textures made in Gimp) for Fallout 3:
Darker color:
http://i.imgur.com/xa3GVOi.jpg?1
Lighter color (and I hand made that wainscoting in the main room here):
http://i.imgur.com/qKBJC10.jpg?1
The only thing is, I can't work on anything for your mod till my final exam mod for the Basic CK class here is finished. And again, my texturing is novice work, someone else with training and experience may be able to do much better.