Need help with a project!

CrossRoads:
4 MAX7219, 4 22K resistors, 4 0.1uC caps, 4 1uF caps, COMMON CATHODE displays - 6 @ 4-digit, 1 @ 1-digit, 7.5 or 9V @ 1A power supply, 1 Uno.
All parts except uno available from taydaelectronics.com
Each MAX7219 will control 2 displays, and 1 will control 1 display.

Search e-bay for 18cm 30cm protoboard if the prototyping boards at tayda are not big enough or you can't string them together.

What will your assembly method be?

Since each MAX7219 can control eight digits you might as well go for 32 digits instead of 25. The software isn't any harder and might actually be easier.