I run a zencart from our little shop on the high street. We'd like to be able to sell some products that we don't actually stock in the store and have our suppliers drop-ship them when orders come in.

I want to create an admin type area where suppliers can edit and add their own products. I've downloaded the nearest plugin http://www.zen-cart.com/downloads.php?do=file&id=217

which basically replicates the admin area into a different folder and then allows suppliers limited access to areas of the admin. I'm wondering if that's overkill? I'm not very experienced with programming but would it be safe enough to just build all the required (limited) functionality from scratch rather than having the entire admin load each time? Is there a big advantage in loading in all the zencart admin functions etc? I'm not going to be using hardly any of them.

Whats the best way to do this?

thanks ;)