Usually a person starts with earthworks to move
water, wind and sun scoops/shade.
You've got a road on the high side so you could create ponds that collect from that road; keep in mind, that road will give you "dirty water" from the vehicles and asphalt. That could be your "dirty pond" line of ponds (aleast two, one at the highest point one at the lowest point).
Since you also have a high side where there is no road, you can create a series of clean ponds that
feed all your plants as water moves through your property ( atleast three with one high, one at the mid point and one at the low point). These can be your clean water that you move through out the property.
You live in a very regulated state; find out the rules for keeping a few pigs and call your ponds pig wallows, find out the rules for ornamental ponds, find out the rules for swimming pools -then call your ponds whatever you need to in order to have them and make a gesture that suggests this is their usage (like buying/renting one pig).
Tell your neighbors you're creating firebreaks and flood control earth works so their properties will be more safe as will yours, but only if they ask questions.
Prior to digging the earthworks, plan for what plants you want planted on the disturbed earth you'll have, buy the seeds/seedlings and have them on hand to immediately plant after you've completed your earthworks.
Good luck!