I'm sure you realize you are at your limits. Actually exceeding axle rating is a definite no no.
That said for a one time close to home trip OK. But I do not think you should plan to tow regularly with your current combo.
Yes you are exceeding the ratings.
If one passenger or a box of apples makes a difference you are cutting it too close. You have put enough effort into knowing your ratings that you know better.
If you are looking for someone to agree and say your OK to be a tad over you are mistaken. You need a bigger truck or smaller trailer. You are compromising your safety.
19'Duramax w/hips, 2022 Alliance Paradigm 390MP >BD3,r,22" Blackstone
r,RV760 w/BC20,Glow Steps, Enduraplas25,Pedego
BakFlip,RVLock,Prog.50A surge ,Hughes autoformer
Porta Bote 8.0 Nissan, Sailun S637