Rebs, keep in mind...
Many of the experienced shooter/loaders using the LCD, own several custom mandrels to have fine control of the neck, and we also use a body die in a separate step to control shoulder datum and body diameters.
Also, the older LCD versions have a longer collet that covers the whole neck but their recent change was to shorten the collet to allow a "flare" on the case mouth which many of us hate because our trim/chamfer process conflicts with that change. Look at the end of the collet to see what kind you have.
Many of us predate the Type S bushing dies, and we learned to prep brass that sucked compared to what is available in this age. I'm not saying a rookie shouldn't try a LCD, but that you should also try a LCD along with learning all the other methods of more conventional brass prep first.
Set a goal of knowing which tools and methods to apply in different circumstances, but those skills come after you learn each context very well before taking on the next lessons.
If you are going to use the LCD before you learn to use a more conventional method, then I suggest you get a body die and also think about getting mandrels that allow you to make changes when the stock mandrel isn't giving the best neck tension. BTW, a type S bushing die without the bushing makes a good body die but then can still be used with a bushing so you don't need both if you are on a budget.
With 223, use good virgin higher quality brass for study, and use the rough range brass when you don't care and give yourself time to learn to turn the junk into gold as time passes. Getting assorted junk brass to shoot less than 0.5 MOA is a good way to frustrate a beginner.
The Redding incremental shell holders allow shoulder length control while you get to bottom out the die and they are far less technique sensitive, assuming a typical single stage press. Every student I put on those has successfully controlled their bump and FL sizing. They are as easy as it gets.
Also keep in mind...
It is a fair idea for a rookie to start at 300 yards with 223. This way, they can master topics like gun handling and loading without the added difficulty of distance and wind or while using much more expensive materials.
However, most (ETA; accomplished) folks start as little kids and learn to shoot prone-sling where the loading goal would be to keep the groups roughly under 1 MOA. By the time they grow up and decide to try F-Class, they have absorbed more than a few topics on both shooting and loading. When they try loading their first times, they are happy when their first efforts stay inside 1 MOA.
However, if the game changes to keeping those groups well under 0.5 MOA from a rest or bipod in F-Class, then it moves up the schedule on needing to learn to load at an above average level. Getting any rifle capable of shooting F-Class to perform is a merging of both the right materials and above average loading technique.
So, I agree with using a good 223 to learn. It is economical and practical.
But now I am preaching... that one should take this in stages.
First shooting groups under 1 MOA at 100, then 200, then 300, etc. Give yourself a chance to get a solid foundation. Too many folks get ahead of themselves, pull out a credit card, and then spend a bunch of wasted money thinking they are ready to run and become a competitive shooter at distance before they learn to crawl or walk. Prodigies happen in math, music, art, sports, shooting, etc., but most folks are not a prodigy.
Good bench methods need to be learned early, and bipod or rest becomes part of load development. Start out with range flags or wind flags as soon as possible, you are going to want to learn to read wind and use every opportunity to practice.
That said, I also think you will either need a club/mentor or to slow down and be realistic about learning to reload the same way one should take shooting in stages.
First, give yourself a goal of 1 MOA or better while you gather materials, recipes, tools, and skills. Just don't freak out when using low quality materials, which is the same as saying use good bullets and brass when you care about the results.
You will find that on your own it takes much longer to learn to get well under 0.5 MOA which is required to make master or high master in F-Class. In a club setting with a mentor, the learning curve is faster, but it is still a learning curve that demands some bench and rage time before you discover the keys to keeping 20 shot strings in the 10 ring.
You have asked some good honest questions lately, so keep at it and don't get discouraged.