Engineer support build- i need help

I want to do a engineer to play on group as support. I usually play with my son and he gots a summoner. I would like a build with haste to give his elementals and 9 darksouls more atack speed and also healing for all them cuz he uses carnagor instead of WD . i dont need area damage but would be cool if i could have some single target dps to help in bosses.

can some1 more experienced and after the class changes of 1.5 wich gear i have to look for and wich skills setup.

thanks