BC:
I won't try to dissuade you from starting a VE build (much

), but construction times will be about the same whether you're building a VE/LE/CZ, approx 2,000 hours. Total costs may be similar, though power plants for the first two are easier/cheaper to find.
Getting your 'feet wet' is somewhat of a moot point, and may be a waste of time.... Two to ten years until first flight. After the first few chapters you'll be mostly on par with every other builder.
IOW, If your mission indicates a Cozy MKIV, spend your time (and $$) building one. There's a ton of support, trust me here

Rick