May I asked why the OP ask about a smaller trailer in the first place?
I think he has been convinced that a larger dual axle trailer would be better,
But let us shift to asking what kind of towing vehicle he plans to use?, Under normal circumstances of having a full size truck etc,etc, Yes we all would try to use as large of a trailer/load as the truck can comfortably tow,
example: back when I trade my 13 ft trailer for the 16 ft I have now, The person I trade with had downsize his vehicle from a full size truck to a Chevy s-10 with the 4.3 engine, He told me the truck could in fact pull the 16 ft trailer although was ridiculously out sized and the truck simply didn't have the proper rear-end for towing all the time, so be that the reason he wanted to trade and downsize trailers and quite understandable,
I talked to him a few weeks later, asking how the trailer was working out for him? he said it was a perfect match for his S-10 and can hardly know its back there, Of course I already knew that

. that size trailer towed perfectly,

Actually when I owned the trailer I frequently pulled it with my wife ford explorer 5.0 ( Bumper ball ) with no problems, I wouldn't even think of pulling the 16 ft I have now with it, Yes I'm sure it has the power but just as the man with the S-10 .... a 16 ft is simply too large and outsizes the vehicle,
when I pulled the 13 ft / tractor loaded it was a good fit, although as others have mentioned was no room for loading extra implements,

and with the work I was doing with my tractor I needed extra implements, and was the reason I traded up, otherwise I would have been happy towing that size trailer and tractor with any Mid/size vehicle,
BTW the 13 ft was a dual axle

and as mentioned is best to go with dual axles for so many reasons,
