I expected a response like this, sorry. I understand my method was horrible, I only suggested it because I had nowhere to start off of. The schematic I provided was one that someone else used for a clock. But you are correct, the 3x5 digits would be to small and hard to read. Below is a revised version. I'll do a 7 segment display with each segment being 3 LEDs long.
This brings my LED total to 131
So just from a feasible point of view, can I drive all those LEDs on a uno using the part you mentioned?