@linux_mclinuxface A few thoughts as an advanced amateur

Your approach isn't a bad one

Lenses are going to end up being your biggest investment, and honestly full-frame digital sensors have gotten so good that the "personality" of those lenses are going to influence your images more than the body

So, lens mount choice (E-mount, F-mount, etc) is probably the most important decision

I settled on Sony (so, E-mount and some used A-mount lenses) Plenty of great recent used bodies work for those