I should also note, for my silly current project I am actually working with 74LS TTL packages again and I want LEDs (on 330 ohm resistors) on some of the inputs and outputs. An issue I have is that the input LEDs are obviously dimmer than the inputs so clearly the package can't supply 15.15mA and probably I am pulling it at max which can't be good, hence I think I need the transistors. I like the idea of using these MOSFETs, it's a part I have not used so far.