Hi,
what is "No SPOF on load balancer"?
It is possible use both of ACE's (ACE4710 has a bit less power, but it depends on licence but for your request it is ok).
In general it depends on network design. Sometimes is better select module, sometimes standalone box (4710). If there is core switch based on 6500, it is possible thinking about ACE module. If there is no C6500, it is better choose standalone box, but as I told, it depends on network design (and future plans).
For technical details of both devices check data sheets at cisco.com/go/ace
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martin