Adding washer/dryer prep to a 5er

This may likely have been asked before but I've just got a minute before bed here and was hoping someone might be able to share thoughts on the idea of adding washer/dryer prep. We are moving into a 5th wheel with our four young kids within the next 2-4 weeks. Currently have a bunkhouse with opposing slides and half bath...which we thought was great but recently came to the conclusion that a toyhauler with loft area would better suit our needs. Fell in love with a 2011 Keystone Fuzion 405. It's perfect!! EXCEPT, no w/d prep. A washer and dryer is going to be a big deal for us. Dealbreaker on this rig probably. Just holding out a little hope we can still make it work.

Adding prep too much work? My husband is really good at DIY- grew up remodeling homes with his Dad. However he's not super comfortable with electric. Everything else (plumbing, etc.) he could do and most likely electric also just not sure how involved it would be and if we should just keep searching.

Thanks ahead of time for any advice.