Your list looks complete. I've never owned or operated a 1050 so no words of wisdom for you there but I have loaded a lot on the 650 and 550. I agree with others, get the parts kit. Even though everything is covered under the warrantee, waiting for a replacement part to arrive is frustrating even though it is free.
I have broken two indexing rings, one was my fault for forcing it when I had a jam and the second one was just broken when I went to use the machine. Both times it was covered no questions asked. I don't believer I ever broke anything on my 550 but it doesn't get the use my 650 gets now.
As far as having both a small and large complete primer setup never felt the need for that because there really is only one more step involved when changing them out and the is the one screw on the bottom holding the primer disk, change disks and drop in the primer magazine and its converted. I do agree having a spare powder measure assembly is handy, saves you some time of getting your powder charge dialed back in however it's not necessary.