Portage Park Garden Unit-HVAC HELP

[Mario Morales]

I have a garden unit in Portage Park, about 65 x 22 feet. I'm looking into HVAC options and will be adding AC as well. Some are recommending a 2.5-ton system, while others suggest a 3-ton unit. I've heard that oversizing the AC can lead to humidity issues due to short cooling cycles. Does anyone have experience or advice on how to choose the right size?"