I built good sized gardens (approx 1/2 acre) for a friend in Nicaragua about the same altitude and climate as your place, good rainfall & plenty of water, it was great, easiest place I have ever grown. A few yrs of building the soil and it will be amazing. Could grow anything but is so remote that is no viable market, the locals in that area live on rice, beans, & corn, no money for luxuries like lettuce or tomatoes. Needless to say his workers, friends, and animals eat extremely well
My place is on the Caribbean Coast and the growing there is more challenging, the weather is extreme, up to 200 inches of rain a yr. Huge variety of tree crops offsets the smaller vegetable production.