Wow. Beacon of Hope is a great find. It comes up in an SRD search but is not in the feat list. Another flavorful/interesting feat for Aasimar w the daylight racial spell is heavenly radiance.
Bodyguard requires you to be adjacent, but aid another requires you to threaten the attacker. Plenty of squares would allow you to be adjacent to an ally and threaten an attacker 10' away.
The force weapon thing isn't the best part of that build. To me, if you can heroism two ways (and therefore rarely run out), debuff with menace, give out +2 untyped to AC (or more w benevolent armor trait) and use a move to give a +2 stacking competence bonus with the combat advice feat while riding shotgun on a reach weapon, the cumulative effect is very good for a support build. As for Quick Channel - yes, it is good, but it consumes a lot of channels forcing you to take extra channel with the few feats you have, making your character sort of flat. Also, sucks big time when you run out of channels.