To Bridge or Not to Bridge

I currently use all Parasound Halo amps. I use an A-21 to power my main left/right channels (Aerial Acoustics 7Bs) and another A21 to power an Aerial Acoustics CC5.

My question is...as an upgrade, should I use the two A21s in bridge mode to power the main left/right 7Bs and then buy one more A21 and bridge it to power the center CC5

OR

Use two separate JC1s to power the main 7Bs and bridge an A21 for the center CC5. I guess my core question is: Is bridging going to be safe for my amps and will it yield as good or better results as a JC1 monobloc?