A couple more questions, thanks. I hate to be a worrier, but I was one of the lucky people who tried to book my dining at 180 days out and it was glitchy so I was completely unable to book online.
When I go to
MDE, all my tickets and dining reservations show up, so that means I'm linked, correct?
YES, you appear to be linked 
What did you mean when you referred to using your hard ticket for the party to secure reservations between 4 and 7?
answered by Mesa in previous post
I know I'll be rushing to get the reservation that means most to me, so if the 3rd reservation isn't something I really want, can I go in after finishing all my fast pass booking, or do I have to modify right then?
You can grab what you want and then go in and modify the times from what is available.
I'm pretty sure I can modify at any time, but just checking. I read the tutorial on easywdw and they were showing the modifying so I got a little confused which isn't too hard to do.
There are several video tutorials on Youtube that will show you a walk through too. These helped me a ton
That said I will be so happy when my 60 days has come and gone so I can relax and enjoy the preparation for the trip.
I felt the same way when I was waiting for my dates to open up. We had a camping trip pre-planned on the day that mine opened and sitting in an RV with super slow internet about drove me crazy (it actually took me almost 2 hours to get mine complete because the internet was soooo slow at the RV park) but it was much simpler than I ever expected and we got everything we wanted for times that I thought we wanted but I have tweeked ours about 20 times since I first got my FP's. I have made the mistake of reading some threads like the one on telling people how to get 20 fps per person per day and the one about throwaway rooms, which give me high anxiety, lol.