Where exactly are you looking to work first of all?
Secondly, i personally wouldnt waste your time or money going to aesthetic school...
If hired as an RN, you are paid as such... aestheticians are paid LESS and can only administer certain treatments depending on location (another reason why i ask your specific location).
Next, as an aesthetic nurse you should concentrate on specializing on the procedures only medical professions are allowed to perform, especially injectables.
Lastly, most hiring managers will look at someone like you as an IDEAL candidate, due to your lack of aesthetic experience (however injectable experience is a good foundation to have if possible - but not technically required as they will train you), because usually experience with lasers, other companies etc... means habits formed that the new company will have to overcome with you (as they want you to follow THEIR set protocols not what you learned elsewhere).
Im happy to give you any advice desired in this subject matter if i can... just let me know your specifics and what info you'd like.
btw - My current career (that will soon change as i am going back to school for nursing soon) specialized in Aesthetic Medical Management & Consulting around the United States, developing new practices for physician, turning established ones into national corporations, restructuring & retraining staff at financially struggling ones and doing trainings in marketing, consultative sales, staff development and management in every level of medical aesthetic facilities.

so i might know a thing or two that could help you ;-) lol