You have many years of shooting ahead of you.
I ran SD, 550, LnL and finally went with a 1050. I too am a competitive shooter. I shoot 9, 40, 45 and 223.
80% 9mm
Just because a press is designed for a certain volume doesn’t mean your volume must be in that range.
In my experience the consistency is better with my 1050.
I am old
The 1050 (1100) are so smooth it is easier on you. What i do is make a large run of ammo that will last several months. As i said i have run other presses. I feel the the precision/consistency is much better with the 1050.
It helps IMO to do large runs assuming your press is setup correctly for consistency. The variability is less IMO with the 1050 (1100).
Changing calibers is not a big deal.
i bought separate toolheads/powder drops for each caliber but if your not in a hurry you can just change powder recalibrate, change dies..
Changing from small to large primers is easy as well.
buy once cry once.