interpreting manifold readings

[waybux]

Hello, I am in need of some assistance interpreting a/c manifold readings.

My new 09 cvpi a/c situation.

Initially: static pressure 150/150 ambient 105 degrees 48% humidity.
A/C on max at idle: vent= 44deg 30low/225-230high
while driving: 44 deg vent

I added one can 12 oz r134 with dye.

as I added pressure lists: 30/250 @46degrees (*all at idle)
35/250 @46
30/255 @43
34/260 @41
30/260 @40
final= 28-26/220-245 @39deg this is after driving and ambient temp is 92-95 surrounding car (88 outside)

Here is a part I questioning: at 1500 rpm a/c clutch cycles every 25-35 seconds. Pressures= 25/275 clutch cuts out, 42/170 clutch engages. vent temp is average 41 degrees

To my understanding I need a little more freon, the low pressure switch is opening circuit above idle because of temp drop. Is this correct? Can someone advise me.