On the surface that sounds fair enough, as long as they aren't extremely tanked up power armours or something. There will be more of an emphasis on overall storytelling than specific character traits, but if you want to draw inspiration from certain perks when building your character then that should be fine.
Well of course this is a roleplay it better be a solid story or I will be the first to be disappointed by you. Also i tend to avoid power armor just not that kind of player, I just want to build this actual character in fallout to get the appearance, and I have some very nice non vanilla clothes/armor. Possibly one of the guns (It's a remington 870. favorite shotgun in the world.)