Welcome to the briny deep RobT1.
I'm not sure exactly what you mean that one mod interferes with another.
There are two common scenarios.
One, when you start installing multiple mods, one will often overwrite parts of another. For instance, you install TMO, then install RSRDC. Some of the files of RSRDC will overwrite some of the files of TMO. That is intended and the game should run fine. It is important to make sure you are adding the correct version of the second mod, otherwise you will have issues. It is also important to make sure you have the mods installed in the correct order. TMO and RFB need to be installed first, then the associated update or patch mods. Then add RSRDC, then anything else.
The other one is if you install two uncompatable mods. For instance TMO and RFB can't be installed together. The second one will overwrite some files of the first and the game files won't work together properly. When this happens you normally get a game freeze of crash to desktop. The only way to fix this is to remove the offending mod.
If you have any more questions, don't be afraid to ask. We were all there once ourselves and are happy to help.
Now start chipping, scraping, and painting. The boat's looking kind of rough. I think pink would make a good color for the primer.