Just lurking here but I'm a cosmetologist and wanted to say that Brazilian blowouts are awesome! You could also ask if the salon you are going to, offers the Brazilian gloss, the majority of the time it costs less. (depending on the salon)
Here are a few benefits of the gloss as opposed to the blowout: For one, your hair will be super shiny and pretty (either one will do that though! hehe) The gloss uses keratin instead of chemicals

always a good thing. It uses a lower heat and normally will not cause scalp or eye irritation. (the blowout requires a 450 degree heat on the hair) Gloss reduces frizz and curl about 50 or 60% which means if you spend TONS of time flat ironing or messing with your hair, you won't have to do that any more!! Woohoo!!! It's especially good if you have those unruly little curly/wavy/frizzy hairs underneath your hair or around your hairline. It will also last you about 3 months and can be used on color treated or chemically treated hair without damage. I've never done one myself but have taken the courses to do them and assisted with them. I've seen the results on many different hair types and let me tell you, it looks amazing!!
There are tons of facts online about both the gloss and blowout if you want any more info on it. I highly suggest either one though. One thing that I do recommend is that you purchase the specialty shampoo and conditioner with it though because the sulfates and sodium chloride in normal products will breakdown the gloss faster and it won't last as long

Anyway, sorry to side-bust on your post but I figured I'd offer a little info and an opinion.

Enjoy your hair if you decide to get it. It will look amazing.