Generally it is not an excelent way to work with Tamino using 100MB documents. Tamino is much more useful with many small documents that confirm the same schema. Of course, total size of all these documents can be greater than 100MB.
I think you should reconsider your schema.
The next problem is that you want to load 100MB of data in the same transaction (Interactive Interface sends all data via one POST request). It demands a huge journal and patience to do this.
Take a look at XML Data Loader Utilities.
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