It also would be a good idea to have the heads "hot tanked" after disassembly. That'll get rid if all the
oil and combustion deposits in the chambers. You may have already planned to do so.
The best of luck to you with your rebuild. The FE has a lot of not well known idiosyncrasies that need to be dealt with during the build. If one doesn't know them one can get into problems that'll cost a lot of time and money. Personally, I wouldn't even hire a well know and very reliable machine shop to do a rebuild if they didn't have a good bit of FE experience.