This is a technical forum where such things and thoughts should be discussed. Very interesting and fun to be a part of it on distance! Always someone that has experience and knowledge, "been in the same boat" before.
Its better to be worried about eventual problems and double/tripple check before starting it....it can cost a lot otherwise, time and $$$. The engine here use special parts that cannot be found on the shelf anymore or everywhere...
I had many thoughts before starting my engine. The restoration of the engine was made during such long time, easy to forget things, done or not. Maybe something inside that shouldn't be there...
I took many photos during the restore/repair. I used them afterwards to check what and how I did it. I'll take more photos for all future steps so I can verify afterwards when needed.