A couple questions for you Sasha -

Do you already have the press to reload?
Also, where would you be ordering the equipment from?
If you do not have the press, then it would be best, IMO to buy one of the kits. I bought an RCBS Rockchucker with the 5-0-5 scale, not the digital one. In the future, I had to buy a case tumbler, and calipers.
I see a little confusion in your choice of dies. For the .243 Win, you should only need one set, the Competition die set should have all the dies needed.
I also see you have two case trimmers, you should only need the one, (I would pick the Redding).
I can get a list of what I have, if you wish, just not sure if this is your first time reloading, or if you already have the press and other things to get started.