stake is very good and popular gambling site and they provide good original games. So you can go with this. Because stake is quite VPN friendly. So even if it is restricted for your country, you can change location through VPN and enjoy gambling here. However, if you use a VPN, you must avoid large amount deposits. Because there is no guarantee that there will be no trouble suddenly. On the other hand Rollbit can be a good stake alternative so you can also use it if you face any problem using stake.
I don't think there will be too many problems with a big amount of IP change. While there is a multi-account or any type of violation of the gambling site the user may face problems while there is a good amount of returns. Usually there will have no problem until you win a large amount.