I did some research online, & found a actually nice on Amazon that seemed to fit all my criteria
My partner Bonnie is very involved in martial arts, then some people love going to the gym, but when Bonnie decided she wanted to change her lifestyle she decided to join a dojo. Over the following 2 years she lost a lot of weight, & found a modern confidence in herself. All of that started to change when another company bought the dojo, & converted it into one of their franchised workout centers; Bonnie was pretty aggravated, & so I hatched an idea to cheer her up. I cleared out the ancient workshed, hung some modern drywall & painted it, & then bought a portable for it. It took a couple of weeks, but when I was done Bonnie had her own private air conditioned dojo in the backyard. The main complication I had to overcome was finding a powerful enough that took up the least amount of space. The task shed is only 12 by 12, & with the corrugated steel roof it sucks up the sun better than any solar panel & converts it into intense heating. The had to be able to keep the summer time heat at bay, while not taking up half the room. As much as Bonnie needed a enjoyable device she also needed plenty of area to practice her routines. I did some research online, & found a actually nice on Amazon that seemed to fit all my criteria. The bottom line is that Bonnie needs to love it, or else I will have to find a different for her.