2 to the 7th power is 128, so for something over 64 but 128 or less, you'll need 7 address bits. The lower 4 address bits will go to each of your 4514 decoders. The upper three address bits will go to the master decoder, each output from the master decoder will go to enable one of the 7 lower decoders. Here, you will use an active low decoder, and hook it to the inhibit line of the 4514. So you should use a 74HC138. And a master enable to the master decoder will turn them all off at once (so 7 address plus 1 enable).
Also, when driving this many outputs, it may be easier to use ULN2803 drivers to drive 8 circuits at a time instead of discrete transistors/resistors. Everything is built into the IC package. Of course, they also make multiple transistor packages, but then you'd need external resistors.