FYI, the part from Terms & Conditions about this:
Restrictions on Use of Materials.
No copyrighted materials on the Site may be copied, reproduced, distributed, modified, republished, uploaded, posted or transmitted in any way, without the prior written permission of the owner, except as follows: you may download one copy of the material on one computer for your personal, noncommercial home use only, provided you do not delete or change any copyright, trademark or other proprietary notices. Modifications or use of the materials for any other purpose violates the intellectual property rights and other rights of the owner. You further agree that you will not disassemble, decompile, reverse engineer or otherwise modify the Material. Any unauthorized or prohibited use may subject the offender to civil liability and criminal prosecution under applicable federal and state laws.
So yes, technically you could be sued for this, but for various reasons, it is highly unlikely that that will actually happen.
Personally, I wouldn't advise you to go ahead with this. Regardless of your liability to get sued, what's the point of making a dollmaker if you're only going to be using props that are already on other dollmakers?