There is an important issue relating to hosting a "seed" on DreamHost that you have not addressed, and that is the nature of the "seed". If the "seed" contains copyrighted material that you do not have legal right to distribute you will be in violation of our Terms of Service for making it available, and your account will be subject to immediate disablement without refund.
This makes the rest of your question moot.
... and yes, that applies to the several seeds of "Myst" I saw earlier on your site.
--DreamHost Tech Support