Hi Ken,
I have read your post few weeks ago and took some time to think about the scope of work you have to do. Some words about Darryl - I think he is still with Hawkbridge, so this might be a good choice for starting. There is one point, I totally agree with Crispin - If you migrate your applications to Java, please keep in mind, that this is purely native programming. And if you have ever developed applications with tools like CA 2E or CA Plex, you will know what I mean.
So, I would recommend you to get really clear of your goals and then decide what fits best to your users needs and requirements. Our company has developed a tool that assists a programmer in using CA Plex as the platform to build your applications. Tools4Plex is able to speed up development performance immense. And we are able to import existing information into a Plex Model, from a various number of sources, including CA 2E. As one of few presentation layers, we use PlexXML web framework to build flexible web applications with iSeries DB2, MS SQL Server, MySQL or Oracle as the DB-Layer. They can also co-exist with your present CA 2E programs, so that you will be able to have a partly migration, where you only migrate the user interface, for example. With Tools4Plex, we are able to generate all the definition files necessary for PlexXML automatically. Modernizing your DB2 database to become DDL defined is another feature.
If you are interested in some more information, you can download the presentations I held at the CA Plex/2E user conference in Islandia, N.Y. this November. You can find the files here. I would prefer the .pptx-files, because there are a lot of hidden sides that are not shown in a .pdf-file. Don't hesitate to contact me, if you have any further questions.
It's also possible for us to migrate a smaller model for you, as kind of a POC, if you are able to send us all the Y-files that are inside your Synon (CA 2E) model library as .xls or .xlsx files, exported from the iSeries with Excel 2010 or 2012.
Regards,
Axel