DVD Replication/Duplication Questions

I didn't know where to post this so I figured since it had to do with video production I would post it under the FCP category. I am at the stage in my production of figuring out how to print my DVDs and I have a couple of questions, I am planning on sending in a master to a replication/duplication company to have 100 copies printed with cases.
Specifications:
- The film will be 30-40 minutes long
- It is shot fully Canon DSLRs
- Footage that is edited is in the format of 1280 x 720 prores 422
- Master wil be made in Adobe Encore
- 100 copies will be made
Questions:
1.) Is there any major difference between duplication and replication of DVD's? the information that I have gathered is that replication is for companies looking to produce thousands and thousands of DVD's where as duplication is for more short run projects that require a couple hundred copies. seeing that I am looking to produce 100 copies I figured this site would be a good way to go http://www.sfvideo.com/ it seems to have a good price and is one of the only sites ive found that lets you place an order under 300 copies.
2.) I have read a bit on printing a master copy of your film and have come to the conclusion that if you are going to replicate mass amounts of DVDs you have to burn to a digital linear tape but if you are doing short run projects you can just burn to a recordable DVD and send it in, is this correct? or do all masters need to be printed to a DLT? or does it just depend on which company you are going through and what they accept? I am going to use Adobe encore to print the DVD.
3.) What type of file should you bring your film into encore in? I am editing with 1280 x720 prores files.
Thanks,
Tyler
Re: Producing an Indie film 

First off, you do realize that DVD is an SD medium?  If you want hidef, you'll need to make blue rays.
As to your questions:  Replicated dvd's will play in any player.  Sometimes burned discs will have trouble in some players.  Don't know the place you've mentioned.
Whatever you give a replicator, they will make a glass master from which to replicate.  A DLT is really only necessary if you plan on paying extra for a copy protection scheme.
I've never used encore so cannot help there. 
Anyone else?

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