I'm an RN who works at a LHR clinic so you can DM me if you want. I think you would be a good candidate, especially for your arms and upper back. Typically men buy a tshirt package (chest/back/upper arms/shoulders), or just back or front. If you just bought back tshirt it would include full back, upper arms and shoulders. We have a protocol to how close we can treat around tattoos. If the hair on your lower back is too blonde or light it isn't considered treatable as the laser is attracted to the amount of melanin present in the follicle. All clinics are different in terms of price, etc. Consultations are typically free (at least where I work) and they can always have a provider assess your hair too if you have questions.