Another thing I'd suggest on the trailer would be a drop gate on the side. It's one of those things that you don't think about, but I got a trailer with one and will never have another trailer that doesn't. I put the ZTR on the back and the two WBs on the front sideways. The one in the middle never comes off unless one of the other two are already off. Saves time in the long run from having to pull a mower off to get to another one for different jobs. And I would agree, don't buy anything less than 6' wide, mine is 6'10" and worth every extra penny for the additional space.
NORTHWEST FLORIDA LANDSCAPING INC.
2012 Ram 3500 6.7 Cummins Laramie
2008 Ford F-550 6.4 Powerstroke Flatbed
2003 F-250 7.3 Powerstroke Lariat
2014 Kubota SVL90 CTL
2013 eXmark 60" Lazer Z X-series
2013 eXmark 60" Lazer Z E-series
2013 eXmark Commercial 30"