Are they doing alright? They get indirect light from the west, maybe an hour or so of direct sun right before sunset. (the darn trees at my apartment complex block most my sun!)
Are they okay length to plant? Most of them are between 8" and 14"
Oh, and what kind of Philodendron are they? They're a bright green, with some odd pinkish/red. heart shaped leaves, about 1" - 2".
Any tips and tricks?

Thanks to you all in advance. I've been browsing the forums for months now. There's a lot of good info on here, and everyone always seems so helpful. :)

If they are starting to root, pot them up now.

Or you can just leave them in water but if you do they can be slow to adapt back to soil once it grows "water roots" P. scandens do fine permanently grown in water though.

How many can/should I pot together, and what size pot? Since they don't actually have a root ball, i don't know how to choose a pot size.

And agree, they will stay alive indefinitely in water but probably not grow at the same rate as those in pots. The leaves will stay small. Everyone should satisfy their curiosity on this, it's fun and helpful to become more intimately acquainted with this plant. And no risk of overwatering! In fact, I don't think I've ever had one of these in water that died of anything besides me forgetting to add more water. You can trim the roots if they fill the bottle too much (and you can get it out of the opening.)

Here are some cuttings I potted a couple weeks ago with different supports because I want to see if they will grow even bigger, mature-form leaves (although these supports may not be tall enough. That's about as much as I can do and still get them in the house for winter.) One of them is using part of a little wire cart that fell apart and the other has oak branches. There's also a risk of the branches rotting but by the time that happens, the vine should have done what it can and I'll repot and start over.

These cuttings went straight from the mama to the pots which has resulted in a lot of wilting but few lost leaves. They were the biggest cuttings I've had to work with so far, some were about 4 feet long. They're finally perking up in the past few days so I'll be moving them back into a little sun soon, early AM or late PM, depending on which end of the front porch they get put.

I was worried our giant dog would pee on the one with the sticks in the pot, which I've left in the back yard under a tree due to it being far too uncivilized for front porch culture. Luckily, he doesn't seem to think this looks like a good target. The aerial roots have affixed themselves to the sticks in places, but I put wayyyy too many cuttings in this pot.