I thought about and I'm already looking for trees / fruits that grow well with coffee. I too think it's a great opportunity, but the lack of knowledge about the subject scares me.
All in the plant is poisonous except beans, therefore less animal pests. I assume that it should be better to avoid skin exposure when you prune or manage the fruit.
If you find worms in the berries, check: Coffee Berry borer, biological control with wasps preferred over chemicals at long term
If you find orange patches in the underside of the leaves check: Coffee Leaf Rust, big enemy of arabica, affecting the flavor of your crop. This is the reason why UK drinks tea instead coffee. Will be a problem near the coast at lower areas. Colder places in mountainous terrain are more difficult for the fungus growth and plants in mountain areas over 1300m can deal with it, or grow clean over 1700m.
Don't bring material from contaminated farms
Soil must be rich and a little acidic; moist but well drained. Both are required. Well drained is a must. Fungi invading roots will be one of our main problems and will appear in a valley or if they are planted carelessly.
They want to be under a forest canopy (required to keep moisture), but probably not in dense shadow. Light indirect but bright. You will want to keep part of the current trees
