Firstly thank you so much for the maths, such a huge help.
I should clarify
My temps without A/C are 85-90, with RH getting to probably 70-75% if i left the A/C off permanently.
I am running the A/C 24/7, it is keeping my temps very easily at 75-80, with RH at about 50%, i can drive the temps even lower without any trouble.
To get the RH any lower would involve getting a dehuey, but i understand that 50% is acceptable/good.
I was considering a CAP CAPPM4 for controller, but it gets such a terrible set of reviews on Amazon.com
I am now leaning towards buying an Atlas, but they make too many so i am not sure which is appropriate for me, also looking at Sentinel.