People usually stick with 15" and 16".
15x6.5 or 15x7's. Tire sizes for 15's are usually 195/50, 195/55, and 205/50. There have been other sizes but that's what I've seen usually. I've seen 205/55 but I think it was on a 7th gen and those have a bigger wheel well as far as I know. It's all user preference. Do you want a thinner/meatier tire? Do you want skinnier/wider tire?
16's are usually 16x7's. I'm not sure if it applies to 5th gen's, and I don't see why it wouldn't, but 205/45 is as close to "stock size" (AKA the least amount you'll throw your speedometer off by) as you can get on a 6th gen.
Also, be sure to get the right offset wheels. More commonly purchased wheels for Honda's come in, I would say, +35-+45 since the wheels on our cars have a very high offset and companies know this. But you can purchase wheels with a lower offset so just beware. 2.5" isn't TOO low but it's enough to cause fitment/rubbing issues if you get low offset wheels and/or wide tires. I'm lowered 2-2.5" and I have 16x7 +42 wheels with 205/45 tires and I can't fit a finger between the tire and rear quarter panel.
Everything is up to you. It doesn't matter what we have to say because in the end, it's your car and you need to make it look the way you want it.
