Hi there! First off, I congratulate you for thinking outside the "hospital" for nursing job opportunities. I was an aesthetician and massage therapist for many years before getting my RN. The moment I finished nursing school I emailed various MD's in the area (southern CA) that offered med-spa services (I scoped them out and used search engines for contact info), just inquiring if any were interested in an RN with my background. The next day I had several responses. As an RN in CA you are, besides MD's physician's assistants and advance practice nurses (NP), able to operate laser equipment (laser hair removal, and different types of laser resurfacing) under MD supervision and training. LVNs may not, nor may estheticians, etc. LVNS on the other hand may do injectables (Botox, restylane, etc.) with proper training under MD supervision. You are a commodity with your RN to a busy medical spa!
I strongly recommend you get into a medspa setting, get training (you must see, assist with, and perform a certain amount of procedures in order to be covered by a liability insurance)...but do not (I repeat, do not) spend a cent on training. Let the MD pick up the tab...most HATE doing laser vein tx, hair removal (especially bikini area), etc. This is the part where you do a little "grunt" work, and learn all about the business, while getting free training. Ditto for peels, dermaplaning, etc. Most med-spas carry a skin care line of their own (including peels, etc), and their reps will come out and train you free of charge (they'll probably even buy ya lunch, haha).
Later when you learn the trade start thinking about independence. Now, for the money part...since you don't really have spa experience and you will get training free of charge (some injectable courses that last 2 days cost upwards of $3000, ditto for laser classes) go easy. I'm not saying go dirt cheap, but ask for what a local hospital will start a new grad RN hourly (usually between $29-32/hour in my neck of the woods). Then, as you become certified (AKA covered by the medspa's liability insurance) in each area (lasers, injectables, etc.) have them increase your hourly wage-hopefully up to about $40 when all is said and done. And trust me, the longer your training is the better your technique will be (a weekend botox course does NOT make you the best!).
While having an aesthetican license would give you a deeper understanding of skincare and a better comprehension of aesthetics biz in general, I would say focus on getting through the RN program (it ain't easy!). Plus, an MD will not want to pay you $30 an hour to do a facial when they can pay an esthetican $18...they want to pay you to do laser and injectables. Simply put, they want your RN skills!
Good luck to you.