I would see if maybe you could accept the job and only perform receptionist duties prior to recieving your results. With so much 'grey' in the guidelines, thats really the only safest way. Maybe it would be alright, but you definetly don't want to be one of the cases where it is not. Let me just tell you that I took my boards last June and our results were delayed an entire month. Lots of upset people because they had to tell the people that hired them expecting them to be able to start in July that they had to wait a whole additional month. Not to mention that if you do not pass the first round that you cannot retest for 6 months. For this reason I chose not to have a job lined up to avoid possibly irritating a potential employer and 'jinxing' myself (paranoid, I know
Technically estheticians can perform 'relaxation massages', which is one reason I think its such a grey area. The key word is using 'therapist' in your title, you cannot introduce yourself as a massage therapist w/o a license. Theres one school that puts out 'certified massage practitioners' near me. Personally, I have no idea what would happen if you practiced this way for a while, then decide to get your license. You would have to answer 'yes' to the question asking if you received compensation for performing massage.
Let us know how it goes for you and good luck on your boards!