Should I take the WAIS iq test?

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Ive gotten into contact with someone who has experience in psychology and is willing to proctor me on the test for free. Here are a couple of my scores on some pro iq tests that got leaked onto the internet. Scored 139 on the TONI 2, which measures nonverbal intelligence, 139 on the CFIT, 143 on the verbal section of the RIAS, 35/36 on RAPM set 2.
Here are my scores on some of the more reliable online tests: Mensa.no: 145, psychtests:141
Im scared to take the wais because im afraid that my score will be sub 140. Should I just assume that my iq lies somewhere around the 140 mark and leave it at that?