I'd been meaning to do this lot for a while and Strangel jogged my elbow over on MATY. So here is the updated IdleHaven neighbourhood terrain with beach lots included. You can fit 11 jumbo beach lots on the frontage and there won't be too many jutting out bits to disguise.
I've lowered the hills around the lower part, the ground is quite low on the bottom half of the terrain and I wouldn't recommend basement lots.
I've flattened around the clifftops also, for the rich bastards, although there are a few bumpy lots around the area connecting the two levels.
I changed the roads because I could, I tried to create areas which would be suitable for shops or parks in the centre of each area.
You will need to have a camera mod to view and use all of this neighbourhood.
And now I've just realised I haven't even done the .png files and I don't want to lose my typing, so I'll post this now and finish off the other job. :

OK. Now I had to remove all the trees, the terrain kept importing to sims 2 with orange tree stumps, instead of trees. I removed most of them except for a small clump I missed. So the pictures lie.



Looks like this in game.

Here are the jumbo beach lots
