If you have any inkling that you'll upgrade to a larger high-wall popup in the next 5 years, it might be financially better to invest in a WDH now but you really don't have to have one for a Rockwood A213HW. Hitch weight should be well under 500# and you won't be towing a 10-11 foot high sail like with a regular TT so sway won't be an issue.
2019 Rockwood Signature 8290BS, Reese Revolution pinbox and B&W Patriot 18K hitch
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed, 3.73, w/ snow plow & camper pkgs.
2011 Rockwood Signature 8293SS (2015 - 2018)
2010 Rockwood Roo 23SS (2012 - 2014)