I think a lot of the fun in pinball is fixing and maintaining a machine. I say get your hands dirty and play around with one. Is a playfield swap hard? You bet. Easier with a rotisserie, or maybe two side by side. Get familiar with your machine then restore it. You can get a "players machine" then do a LED upgrade, remove parts, become familiar, then playfield swap down the road. You do not have to buy everything then be overwhelmed...do it in comfortable stages.