Yes, removing the engine and cabin heat cables is kind of a big deal. Next time you have the cowls off, take a look at things. I assume you have the plans for your ship? The cabin heat cable is probably the most trouble. The choke cable is fairly easy to remove and reinstall unless the cable ends get untwisted. Same for the throttle cable. The carbs will need to be re synced, naturally. If you don't mind the work involved, it is very doable.
There are some posts in the forum on how to slot those cable holes in the center panel so you don't have to remove the cables in the future.
All in all, there is not a lot of payback for that much work. The option of leaving the 486 installed as you currently have it makes sense.
RV-12 #202 -- Flying