As for the pool, I got a $7 one from Taret that works great, and once it gets hot here I will beach myself in it. Our main level is on the second floor, so to get to the back yard you have to walk down the stairs (not going to happen!), so I got this pool so that it was small enough to fit on our back deck.
Here is a video of it.
We also have the sand/water tray from Target, which takes up a ton of ds's time-he still loves it after two years.
We have tried to plan a lot. I have a trip with ds to my family for a week. A baby shower, a bridal shower for a friend, then special projects we will do on the weekend with dh. And then we make sure we plan one playdate a week, and we'll stop at different stores ds likes when we are out and about-the snake store, home depot, etc...
My mom will come early to help me through the last week. We are going tot he water park, probably go shopping, and I am not sure what else she has planned. I would really love to make a quilt with her for this baby while she is here.
Are you a part of any mom's groups in the area? That is always a huge help, plus you can make new friends.