I would up your budget to at least 150-200 dollar range unless you get a smokin deal on a set of boots. Boots i believe are the most important piece of equipment you can buy for snowboarding. Bad boots = Bad Time/waste of money. Try not to get brand specific, try on everything you possible can. Remember boots pack out, so your boots need to be pretty snug but not to uncomfortable at first because they will need to be broken in. Some brands i can recommend from experience is K2, Vans, and DC.
Union Danny Kass signature model
Lib Tech Skate Banana
K2 Darko Boots