Your posted generator is an open frame contractor generator and is 80 decibels (db). I think, no I guarantee) you will find it punishingly loud. Even with a muffler you will find that the majority of the noise comes from the engine cases and not out from the exhaust pipe.
I've been out in the desert many times when some camp a half mile away is running a contractor generator and it is loud. No it's not punishingly loud at that distance. But it is loud enough to imagine that people in that camp are going to have to speak very loudly to be heard.
If you want any peace in camp with the generator running you're going to want to stay at 60 db or less. Here's two from Amazon. The first at 53 db is extremely quiet but may not run your air conditioner if that is what you want it for.
53 db 2000 watt linkAnd this one below which is heavier but will definitely run your air conditioner and still fairly quiet but it is starting to push the noise level.
61 db 4500 watts 
