Just my opinion, but... While the Maine coast is nice, but the rest of the ride, you seem to be leaving some of the best touring (Pacific Coast) for a pretty mediocre place to tour (the East Coast).
This I disagree with. It's a pretty cool back roadsy route with a lot of intrigue, at least the NE sections I have ridden. Check out Indyfab's photos of the most "mediocre" stretch through NJ/PA Delaware water gap. I've done a more rural route through CT in the past than the ACA suggestion and could tweak their route off of most of US 44. I've also bypassed Philadelphia and Baltimore with back roads further west on past trips south to Washington and VA. But compared with the car drive down the Jersey Turnpike, the bike route is a different world!
I prefaced my comments with "Just my opinion, but..." for good reason. I can see someone really liking a tour on the east coast, but I can also see someone being very disappointed if they expected it to be like the Oregon coast.
I am very familiar with the back roads of the east having grown up here and ridden here for the last 55 years or so. I never said the east coast route didn't have beautiful country and nice roads. I think it does, although in a somewhat understated way.
My negative somewhat comments about the route have more to do with the frequency, price, and quality of the available camping. In the plains and much of the west you can usually camp in just about any small town picnic grounds or park. In the east you would be lucky if you were only run off and not arrested for doing the same.
Again remember that I said this was my opinion
, but I hate staying in $20-40 campsites, I dislike needing to have the more locked in plans usually required if you want to stay with warm showers hosts, and I really prefer not to need to use stealth too often. On the other hand I love staying with other cyclists in hiker biker sites that cost $4-8. I like camping for free in plain sight. I like not having to decide where to stay until I feel like stopping.
There is also the fact that the east coast route has no views of the coast for a pretty large percentage of the way, and much of the way the coast isn't much to look at compared to the west coast, again in my opinion.
Looking through the lens of those preferences the OP's home state is much more desirable for touring. On the other hand had I grown up and spent the last 55 years riding in Oregon, maybe the east coast would be more of an adventure for me as well.