I started paleo in July and I found that counting macros helped me to make sure I was on the right track. I know that everyone says that there's no need to count calories etc while eating paleo, but personally I like to know what I'm eating and it helps me to keep a sense of control. So don't stress about that too much. If you want to log, go ahead and log. The ones I keep track of are calories, carbs, fat, protein, fiber and sugar.

Personally I like my carbs quite low as I enjoy being in ketosis because it makes me feel better. This is not for everyone so you need to find a place where your body can perform optimally while still achieving your goals. Weight loss range for carbs can be in the 50-100g range. Under 50g is going to out you in ketosis, but you would need to experiment and see if this works for you. My fat loss in ketosis is much better and I'm finding it quite easy to build my muscle. But AGAIN, I cannot stress this enough....YOU MUST FIND WHAT WORKS BEST FOR YOU! We don't want you collapsing in the gym and injuring yourself because your body finds it difficult to work off of so little carbs. A bit of experimenting goes a long way!

As for your percentages, yes keep an eye on them, but give more of your attention to the grams of foods you're eating. Here is my daily outline as an example:

Calories - 1500
Carbs - 56g
Fat - 83g
Protein - 131g
Fiber - 16g
Sugar - 29g

The protein is important for building your muscle obviously, but the fats are also quite important. My percentages end up being 15% carbs (max!!) 50% fat and 35% protein. You can feel free to check my diary as it's open and you can get an idea of what I do personally. It took a few weeks of experimenting to get it right for me so it might take you a while too, but it will all be worth it.