3 NTT & 2 Indos Agression ok?

[hobbes4]

I know keeping just 2 of any dat isn't a good idea b/c of the aggression but is it the overall number or type of dat that really matters (excluding NGT)? I have 3 NTT, 4-6", and 2 indos, 2.5-3" in a 100g. I've had the NTTs for almost a year and just added the 2 indos today. I'm hoping the 2 indos won't fight too much.