I have the motorport Kevlar gear as well and here is a list of how I use the motorport gear if it helps...
It does get little chilly when the temp drops low and the gerbing cannot supply the heat to my back as necessary.
This is the jacket, (all photos are off the internet and not me
and the pants like this
I ride year round from 100+ FL temps to 20 degree mountain riding in a thermal layer of this
And a a BMW Balaclava 100% of the time...
The long sleeve shirt, shorts and balaclava is ALWAYS the base layer from 20 to 100+ degrees.
If it is real cold I add a neck protector like this
I then add a layer as it gets colder.
I add a thick pair of jeans as the temp starts to drop and then the gerbings heated jacket and apply the heat thru the gerbings as necessary.
IF I am going to be in the lower temps for what is comfortable I add the Aero-Tex Pant Liner and the Ultra II Jacket Liner (No Insulation) as needed.
For boots I have the Airflow 2 for warm weather
And the AllRound for colder temps
For gloves I find that the BMW Airflow work FINE year round in all temps with the heated grips on the LT
for socks I use the wigman sock liner in the airflow boot
I am sure that each of us tolerates the temperature extremes differently but I find that in over 70 degrees just the under layer and Motoport gear work just fine.
As the temp rises it does get a little warm, but the mesh keeps the air flowing and I know that from experience that having the layers is so much better than the sun baking on the skin.
When it rains, depending on the temp, I might add the liners from motoport. BUT I find that in FL when the heat rises so does the chance of rain and a the rain cools me down so I normally won't put on the liners in the summer heat.
I hope this helps