Asus AC5300 or AC88

I am having a hard time deciding which router will be the best for my setup in the future. Currently I am using one ac87 as a router and another ac87 as an access point. I am looking for two things speed and range. I am even open to keeping an 87 as an AP. I currently have xfinity extreme 250 which is 250 down and 30 up.

My devices are:

iMac 5k
Surface pro
3 MacBook airs - kids when they are all home
5 iPhones
Withings scale
Nest 3rd generation
3 dropcam pros
3 iPads
Rachio sprinkler...

Asus AC5300 or AC88