Two many power wires going to fuse box! Is there a better way?

If you want to feel safer, you can install a auxillary block and have a dedicated fuse to each componet. For me I`m doing the same thing you are, but I`m lazy sometimes and depend on luck too often, In reality, I hate contorting under these A body dashes. lol

No reason to fuse it all separately, though you certainly could. A good point of reference is your other car. Take a look at how a newer car is circuited and protected. My '06 Dodge is going to serve as a starting point for me in terms of number and size of circuits.