The entity limit is fine imho, the scenery limit could use a push or a change. Right now you get a global scenery limit for all maps your scenario contains. This makes no sense as only one map is loaded at any given time. So a limit of 200 scenery for 5 maps reduces it to an average of 40(!) scenery per map.
Change it to 200 for each map or increase the overal limit.
Change it to 200 for each map or increase the overal limit.