74f269 counter getting very hot
With no load on LEDs you get 0.5W. With load, about 160mA @ 5V.
What the heck are you doing Fast TTL to drive LEDs?
Try 74ALC CMOS at 3.3V then you won’t need big resistors as the drivers are 25 Ohms or 74HC family at 5V which has 50 Ohm drivers but runs less  hot with (10mA x 50 x 6) = 300 mW so 3.3 V is much better for everything using 74ALC family only.
Also all the 555’s may be replaced with hex Schmitt inverters and diode + RC to do what you want. One-shots or clocks... Or even without inverters for a pulse with cap and
Pull-up.