Congrats on your new 1905!
There are 2 things to consider: weight distribution and sway control.
I believe most states and provinces require electric brakes for any trailer over 3500# so that's my rule-of-thumb for needing a sway control
mechanism of some sort.
If the brochure says the dry tongue weight is 395#, you'll be over 500# when you get it loaded and add 2 full propane tanks and a battery.
If you're not towing very far you could test it out on the drive home but I'd recommend you seriously consider a WDH and sway control. You can get the Equal-i-zer 4 point hitch that has built-in friction sway control, the Andersen WDH or the chain type WDH that you add on a sway control arm or two. Even if the dealer installs the WDH, you'll need to redo the setup once you're fully loaded and ready to go camping because you'll be adding at least 600#. If you hang around here long enough you'll talk yourself into a few extra mods and accessories and may be adding more like 1000# of cargo. Also, if you camp without hookups you'll be towing a full tank of fresh water with you.
2011 Rockwood Signature Ultra Lite 8293SS, 12K Equal-i-zer
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed, 3.73
2010 Rockwood Roo 23SS (2012 - 2014)
2009 Ford F-150 XLT SuperCrew, 5.4L, 4x4, 5'6" bed (2012 - 2016)