most properties deal a dime line for MLB. Palms, Hilton, Stratosphere, all have solid #'s. The Coast/Boyd group and Stations have them up to -170 as well.
As far as limits, nickels and dimes shouldn't be a problem. That might be the limit for totals & run lines at some places and for NBA money lines as well. If you're not a runner, and just playing decent #'s most places will extend you, and the Coast group generally takes pretty big limits. 10 dimes for MLB & NBA sides, 3 for totals/ NBA moneylines
hope that helps