xD I have cs 1.6 server too, bhop #1 in Bulgaria... I dont know in Poland, but in Bulgaria game is 75% died and if you make server I wish u success, because in gt.rs (not advertise) probably when send sms and up the server join kids, troll and play for 2-3 hours and all the people left.
If you are going to make cs 1.6 server, the mod must be unique. You need rewards, advertisements, good admins and good motivation. I would give you an interesting plugin, when you get X minutes you get vip extras (Probably flag b for reservation and custom extras). If you guys need help for the server, I can help. From years ago I'm making cs servers, also minecraft and sites. But my motivation for cs and minecraft day to day dies. xD
Also know, use the latest AmxModX version, because old has bugs and server can be stoped from exploits. Also I have good protections for all types of hacking, developer and fps indicator plugins. I have the best bhop anticheats, also good classic and all type of hacks protect plugins and rechecker resources and I can help. But always admins are the best anticheat. This is an old game with so much exploits and hacks. Also I have good ban systems (edited) and cool ip network banner from the server and etc. Also antivpn system xD