Congratulation, Lou. The NE Dory is also what I chose. I don't think you can find a better boat anywhere for rowing and sailing--especially if you want to be able to carry more than one person in the boat . . . or a huge load of fish!
As for tips, I'll reiterate some that you've probably already heard.
1. The manual is really excellent, but you should read it from cover to cover once or twice before you even begin building your boat. Knowing what will come next can help you do a better job on each progressive step. Sometimes it helps to know what will come much later. For example, it is useful to trace the shape of the bulkheads onto cardboard so that you can use those cardboard forms when you make your foam flotation near the very end of major building.
2. Don't allow yourself to get bogged down. If you are a first time-builder, you'll have to do lots of things you've never done before. Figure things out as best you can, ask questions on this website if you need to, and then go for it! There is no other way to make progress. The nice thing about working with wood and fiberglass is that virtually every error can be fixed somehow.
3. Keep in mind the kind of boat you are trying to build. I'm a first-time builder and I have known that, while I was unlikely to do a perfect job, I wanted a boat I could be proud of building and yet subject to lots of hard use over many years. I'm not going to end up with a showroom boat, but I am amazed at how lovely it has turned out to be. Credit John Harris for a fine design and excellent control over the creation of the kit.
4. Make or buy lots of clamps! I made about 60 clamps out of PVC (following a tip on this site), and I've needed them all.
5. Mix small batches of glue and get it spread on the wood fairly rapidly. Several inches of epoxy in a cup can start to harden before you get it spread out, but once it is spread out it may take hours to harden. Thus, as a corollary, collect all the plastic containers that you generate in you kitchen, and choose one of a size that allows you to mix a batch of glue no more than an inch or so deep.
6. Wear a respirator when sanding and gloves when using epoxy.
7. Have some sort of vacuum with a hose attached to your sanders whenever possible.
8. Finally, post pictures of your progress so that we can all enjoy your progress and success.
Sail on,
Jeff