It's very hard to answer this question. There are many source mods such as mani and sourcemod. After each update, things can go wrong so it's always a good idea to create a back up and then upgrading it to a newer version.
1. Currently, the released version of SourceOP is 0.8 and it doesn't come with a feature to turn on/off mapvoting system. If you are planning on using mani's mapvoting system, try the below settings (change these settings in your sourceop.cfg under cfg folder
Code:
DF_feature_mapvote 0
DF_vote_freq 599940
DF_vote_maxextend 2
DF_vote_extendtime 15
DF_vote_ratio 100
above settings will disable sourceop mapvoting system
2. If you use mani and sourceop, don't use any of the fun player commands except blind and gimp. Commands like burn player will crash your server no matter what. Also, don't play maps like jb_lockdown and jb_2fort. These maps are not compatible with the server when the server has both mani and sourceop mods installed
3. You can take advantage of having multiple mods on the server in some cases. If you want to set different settings for each map, simply go to cfg/mani_admin_plugin/map_config/ and create a corresponding cfg file. For example, create a file named "js_coop_quest_v9.cfg" that changes the server variables whenever the server loads js_coop_quest_v9.bsp which is one of Joe's popular coop maps
Code:
DF_jetpack_on 0
DF_price_noclip 999999
DF_price_god 999999
mp_timelimit 45
mp_falldamage 200
es_setinfo kill 0
These settings will disable prevent players from cheating. The current released version of SourceOP doesn't not support jetpack. It supports hook instead so when you create your own server, replace DF_jetpack_on 0 with DF_hook_on 0