While my AV components are not located in that front cabinet area (I can see how this would be concerning), we certainly did notice the heat up front coming off the back of that windshield shade (or even the large back window on our model when the sun is back there). I was reading temps of 140f using a thermo gun pointed at the shade. Even with 2 AC's running, it was not comfortable sitting up front in the cockpit area.
Did the MagnaShade thing and feel it is worth it IMO. Granted, not cheap but it lowers the temp on the back of the shade around 40f (for us in my tests). AC does not have to work as hard and it is way more comfortable up front in the cockpit or back in the bedroom (in our case) where there are virtually no windows or vents to open.
You may have already seen this thread on MagnaShade
2017 3113 NewMar BayStar, Safe-T-Plus, RoadMaster SB, SuperSteer TB, Koni FSD shocks, CHF Rear, Sumo Springs, Centramatics, EEZ TPMS, King TailGater, LED Headlight kit, EMS-PT50X, Adjustable arm-rests, MagnaShade, 2017 Cherokee TrailHawk Toad...
And Tucker -