Hi, new member here. First off, this site is great and it's going to be a big help as me and my brother get our own lawn care business going. I am going to be purchasing a new Ferris HydroWalk DD next week. I am not 100% sure what deck size I should buy. I am leaning towards a 48" deck, but they also offer 44", 52", and 61", depending on what engine size I get. This will be for a mix of residential and commercial, geared more towards the residential side for now. We currently have an older Scag 3-wheel(rear steer) 61" mower if that would be a factor. Also, does Ferris offer a velke/stand-on as an accessory? The website does not have a lot of info, and the brochure I got was pretty sparse. Thanks in advance for the help.