I had an island that I put goats on- it worked great till the mexicans spotted them. They would shoot them then wade across the river(shallow in the summer) to get them. The guard dog would follow the rest away from the shot. Which I was glad or they would have probably shot him too.They wiped me out.
It was perfect it even had an overpass across it so they had a dry spot to get in. Goats Hate being wet and it hurts them to be cold and wet(very little fat). Kids born in cold wet conditions will die without help. After 48 hrs they will survive.
With the ground being wet be prepared to trim feet
And the famancha methods is the best worm control if you can't rotate-- check their eyelids every month(closer on kids)worm the anemic ones- cull the ones you have to worm the most. If you can make them clean up behind the cattle- the cattle will eat most of the worms and leave a cleaner pasture for the goats. Goats pick up less worms if they are browsing instead of grazing- so don't be in a hurry to burn- wait and see what they can do with it. Don't forget about flukes.
Stay away from Dairy breeds
Brush goats are wild and jump like deer
Full Boers are calmer rarely jump but not near as hardy
My favorite is a half Boer-
They have triplets alot-- unless you are feeding them ALOT it will draw all three and the Mom down- cull one
Never had any luck grafting goats
Catching them is easy- build a sheltered pen and wait till its raining and just close the gate