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Active-Active cluster + AlwaysOn HA

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Hi all, we currently have an active/active cluster and want to AlwaysOn HA in another data center.There will be 1 or more Availability groups per instance (we have a few hundred DB's) so heard that 100 or less DB's per AG is practical, even though there is no technical limit.So each AG will be: Primary Availability Replica of N DB's on Instance1 or Instance2, and we'd have a secondary replica, as most likely another Active/Active cluster, InstanceX and InstanceY.The goal is to have AG1 (on Instance1) replicate to InstanceX, AG2 (on Instance1) replicate to Instance X, AG3 (on Instance2) replicate to InstanceY, and AG4 (on instance2) replicate to InstanceY.What I'd like to know is:1. Does this layout make sense? and2. Would Instance1 and 2, the main working DB's, do regular failovers to each other, without causing an automatic failover to the secondary locations

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