Camp Ever Lakes or Camp Dragonhead both are great grind spots for 45+. Boulder Downs node is the ideal place to setup camp and run along the outer edge of the canyon. You will be grinding Grass Raptors and the goblins that surround them. I went from 47 to 50 in 2 days of nothing but grinding. Average SP per Raptor was 250-300. Average for the goblins was between 150-175 but they are easy kills.