Try 12 and 15, and I'd say be aware of matchups and play style. 30s isnt crazy high. If you were consistently in the 40s and 50s yeah. If you have a good o and bad D you'll get those kinda score lines.
I get some games that are higher but for the most part its in the 20s, also you'll want a bigger sample size. Look at scorelines over a season not a 6 game stretch.