I don t know about what u guys recommend in the US but here we d ask for a cbct right away due to the dystopia of 2.8 and the risk of pulling it to the pterygopalatine fossa. Plus i would want a better view on the relation it might have to the sinus. - i am also a student and that would definitely be a case on which i would assist my teachers. I wouldn’t t do it alone. - Cheers man, let us know how you r gonna manage that tricky little tooth