Do you have trouble with Aux2SIF 3 interfering with 2 copies of Aux2Batt?
If you don't I would consider scrapping Engi Team 1 and replacing with another EptW1, or perhaps instead having 2xEptS1 and EptW3. I dislike ET in general because as a hull healer it is not as good as Aux2SIF, interferes with Tac Team and you will need Hazard Emitters anyway.
Your aux energy should be taking a bad hit from Aux2Batt unless you run it with high power (you have no points in Auxiliary performance).
i use A2SIF in a healing key bin mostly in pvp when i take heavy damage , which start by RSP to buy time until AS2IF is ready since it have low cd but right before i pop EPS/Aux batteries then heal and start recycling A2B again. For ET1 and EPTS1 i never use them just put them there since there isn't much choice for enseign engineering skills .
Manoeuvers gives 15% bonus defence at max while most tactical have a lot more of bonus accuracy so i tought while being targeted it wont change a lot of things , but if there is a reason to max i'd be happy to learn it.
i run dual ATB so taking bonus auxiliary is quiet meaningless , i have HE2 on realy low cd so i use it to heal even with realy low it is still good.
i took graviton because i use TB in pvp, but i dont knew how graviton are affecting just assumed that graviton will buff in some way , it it is not i'd be happy to move those skill point to an other skill
i dont knew much about ground skills but i should put points in combat and demolition what skill should i get ride of ?
Thank for your answers i will probably put some changes into the build after few more feedbacks.