A lot of the points that you have made are accurate.. Need good grounding, good fencer.. Also it is important to continue the circuit.. This just means that you do not have a dead end.. Make sure that the electric wires continue around the pasture.
We use many forms of electric fence in our pastures.. We have solar and 12 volt fencers for far pastures and electric fencers for home.. Your Fencer has more than enough power to do your job.. Our fence usually entails both barb and electric fence wires.. The reason we do this is we ground the barb wire fence all along the pasture using steel posts.. Then we run electric wire with insulaters on all the posts.. Then when a calf touches the fence it does not have to ground through its feet it also grounds through the barb wire if it touches both as it tries to go through the fence. Hope this helps