I feel like I have been spending every waking minute of my life planning this new pool setup and the only actual thing we have accomplished so far is getting trees removed.
I am still trying to nail down a size that will work. A 21' round is the max we can go and will likely look best in the space (all nicely tucked in the corner). The little voice inside me screaming "Buy the biggest pool you can fit!" would like me to purchase a 15-18 x 30-32. The responsible adult in me thinks I should stick with the smaller 21' round. Many of the threads I have looked over talk about the difficulty in putting up an oval. If it is considerably harder than a round I think that might be the tie-breaker I need. Our marriage was not meant to withstand difficult DIY projects
21' Round pros: Fits nicely in the yard, easily 1k cheaper than the ovals, more 'structurally sound' (which I get...but has there ever been a wall blowout or other known catastrophe on a properly installed oval pool?), whirlpools!, won't be sitting over root systems of trees we've just had removed
Oval pros: More gallons of pool to swim in! (that's really about it. But it's pretty compelling.)