I lived maybe 5 miles northeast of you. I used to have a wire stretched from my house to a clothesline pole, and a 10 meter yagi. I worked Hawaii a few times over the 18 years I was hamming from there.
Yep, propagation all the way. But listen to the bands, too. When you start hearing WWVH - a female voice - on 2.5, 5, 10, 15, or 20, try your closest ham band.
I found that late afternoon/early evening is probably the best time from NENJ. Also try some digital modes. Make the computer do all the heavy lifting instead of an amplifier.