AC does not blow cold
 

Hello, Iam new to this forum and would appreciate any advice you guys can give me on my 02 jeep cherokee sport. Last week i bought the jeep and the ac did not work. I checked and saw a busted hose I also ran power straight to the clutch and it did not engage. I got a new hose, compressor, accumalator and fluid line. Vacuum and checked for leaks charged. I could only get it to blow cool air but it never really gets cold. I put the gauges on and it shows 40 on my low side and 300 on my high i put a can of 134a with uv dye and checked for a leak did not see one. i suspect my high pressure switch because when my fan comes on, my high goes down to 200-250psi. it seems to cool a little better but does not blow cold. My fan comes on at about 350psi on my high.
thanks for any help you guys can give.