Front pannier and child-seat balance I transport my 15 Kg kid on a child-seat. I want to set a pair of panniers. Even if I could put them on a rear rack (I don't know if I can), would it be a good idea to choose a front pannier system aiming to balance the weight? I mean to do not have almost everything in the back part of the bike.

Without panniers my front wheel often takes off from the ground on slopy rocky paths. Is it worth it, knowing that I will lose some steering comfort with front panniers?
I have ridden with children about that weight on the back; there is no way I would consider adding more weight to the rear of the bike. If you worry about the effect of front panniers on steering, I can only presume you have experience riding uni-cycles if you are considering adding rear panniers.

An option to consider would be panniers on the rear and a child seat on the cross bar. This provides many advantages over a child seat on the back, however it requires a largish bike frame - something I did not have.