I have a 90 watt jacket and a dual controller, I'd suggest the same setup.
There are so many choices that influence how the gear works, does the bike have a fairing/hand fairings etc. On my xr400 I use a heated vest with no controller, it is somewhere around 55 watts and works great compared to no heat.
My 90 watt jacket under a snug fitting winter leather jacket is usually run on high, put the same setup under a pressure suit with a good windshell and high will cook you like a turkey, point I'm going for is every bike and setup is just enough different that you want choice/flexibility
I think you'll be real happy with the setup you bought, if you later add gloves my experience says a dual controller is better.