I think due to my case being a small one, and my ram size, an AIO won't fit. I will probably upgrade to a better air cooler for the CPU, but after watching some videos / reading reviews, the better ones don't offer that much advantage over mine, however it is still an upgrade so I will defo consider it. My main concern is how I am going to re arrange the fans, as if the actual temperature in the case is hot itself, I doubt the CPU cooler will be my problem.
Basically, I am going to move the middle fan to the front top, and monitor my temperatures, I wanted to buy an extra fan as an additional exhaust but I think putting both and exhaust at the top rear, along with the newly placed top front intake may conflict each other, so I might not put the exhaust in, and just simply move the middle fan to the top front alone.
(I am even confusing myself at this point, I think a simple diagram would help everyone out here haha)
But thanks for still sticking with me @mickyflinn - I am very thankful that you are helping me out here.
https://imgur.com/a/CpUwyde
Maybe this can help - don't judge my art skills,

If this is going to be a poor idea, then just be honest and I'll consider a new case

I am thinking setup 2 might be worse than 1, because the additional exhaust may be just counterproductive, taking out the fresh air from the intake right next to it, so perhaps just leave it out and go for setup 1