On long distance hikes, your gear needs to be lightweight and durable. Analyze absolutely every piece of gear that you plan to take. Even a few extra ounces can add up to bodily wear-and-tear over hundreds of miles. I recommend you head over to r/Ultralight and read some PCT shakedowns to get a sense of what people bring. Or, try HalfwayAnywhere to peruse the gear surveys of former PCT hikers.
I struggle with acne, and sleeping on a dirty pillow (aka "a bug head net stuffed with my daytime hiking clothes") sure doesn't help matters. Before I go to bed each night, I make sure to wash my face, and then I apply a little Clearasil from a tiny eye dropper bottle. (For all you scoffing right now: acne is painful, and it gets infected. It's not a purely cosmetic issue.)
There are many UL tents to choose from. I think most people buy an expensive Dyneema tent to hike the PCT, but you can also find cheaper silnylon versions which are still quite light. I love the roominess of my Lanshan Pro 1P by 3F UL Gear. I also hear good things about The One by Gossamer Gear and the Nemo Hornet, but I haven't personally tried them. There are also "two-person" tents if you and your friend plan to share, however many of them aren't wide enough to accommodate two sleeping pads side-by-side. Check the dimensions before you buy.
I don't use a footprint. If I'm setting up on gravel or desert pokey things, I'll lay my poncho under my sleeping pad for some added protection.
As for shorts, I wear Sandy River 5" inseam by Columbia. I don't particularly love them, but they have a lot of pluses: no inner liner, they don't ride up, there are three pockets, and they dry quickly. On cold days, I wear Body Wrapper dance pants.
I take two pairs of undies: one to wear and one to wash at night.