Hi Cat! First of all, you are not the first, nor will be the last who is a transitioner confused about their hair type (meaning 3a/4a-c/etc.).
From what I can see in your pictures, you are a mixture of 3c, 4a, and 4b. Your textures are mixed throughout your hair. I see that you mentioned that you were in the middle of brushing your hair. Sometimes that can make the hair frizzy and loose it's definition (meaning, you can probably see your texture at its best when it is still quite wet).
When I cut my hair off a few years ago, I wore a wig for about 5- 8 months straight. The good part about it is that I retained alot of growth, as it is not being manipulated frequently. On the other hand, it thinned out my edges a little bit. You have to be careful with that part.
For deep conditioning, you should try Queen Helen Deep Conditioning Treatment. You can find it at a hair store or at walmart. It is a creamy pearl colorr substance with red lettering I believe on the outside label. It is one of my staple products that I absolutley love. At this point, you are doing great with not putting alot of heat on your hair. With that, you are going to want to make sure it doesn't dry out. That is where deep conditioning comes in. If you have a dryer of some sort, you want to add that for better penetration.
On top of that, you want to make sure you have a good leave-in conditioner or moisturizer, and a good sealer.
My advise is surf, surf, and surf the forums. They have a wealth of information just for you
If there is something you don't understand let me know, and I'll do my best to make it clear.
Have a great day!