As you know your characters better than me, in your post, please state what you'd like on your power armor. This does not only include ability scores, feats and the like (that is the least of my worries), but rather unique abilities which are not necessarily described by the DnD rules. Think of science fiction, video games, novels you have read, or anything in the like and give me a list of what features you would like for your power armor to have. You will receive your power armor early in the game, in Ythir, which is the first location you will arrive at.
You will be able to upgrade your armor during the game.
Please make only one post and edit it as you see fit. That'll make things easier for me to keep track of.