I would just be afraid of increased mucles soreness due to the muscle laying still so soon after an injection. I think that injection in the morning and then moving around all day helps to disperse the oil. But I've never injected at night so I have no idea. Maybe I'll try it too.
I am so glad i am not gyno prone. I have run deca and tren together without even getting itchy nips. I have to deal with MPB though so if it's not one side it's another.
I saw a post about blood levels of Fina and injecting ED or EOD. I think they were pretty stable injecting ED so I don't think it would matter. My concern was injecting into a muscle and then not moving it for 8 hours.