Gopher's "Advance Recon Thermal Nightvision" offers some additional vision modes that I think do a good job of filling the role of some of F4's head options (though be warned, from what others have told me you'll have to choose between ARTN and Flashlight NVSE, if you were hoping to use that one - Flashlight NVSE has headlamps for P.A. too). http://www.nexusmods...as/mods/38328/?
Also, though I'd expect it to be on your short list of mods anyway, Project Nevada has some vision enhancement options for Power Armour. Not as robust as ARTN's, but what it lacks in fancy tactical computers, it makes up for in being compatible with most things, and generally cool as hell. In theory, the available version of PPA is compatible, but some settings on one or the other may still need to be tweaked to make them play nice and not step on one-another's toes. Been playing light armour characters lately, so I haven't really tested recently. For an alternative tactical computer, you could pick up the "Tactics Link" perk from Power Armor Perks; http://www.nexusmods...as/mods/46142/?
You might also consider the infamous JSawyer mod, which has extensive fixes and rebalancing to power armour, including fundamentally changing how Power Armour Training works. It is no longer required, but instead makes Power Armour better...meaning that when you know how to use it, it carries its own weight, making it effectively weightless. Or if you want to tweak the armour without all the other baggage JSawyer carries along, consider Power Armour Overhaul the "light version" of all that. Still rebalances stats, still makes PAs weightless when worn, but effects no other aspects of the game: http://www.nexusmods...as/mods/59399/?
Not sure if any of that is quite what you're looking for, but hopefully it helps!
Edited by Kefke_Wren, 20 March 2016 - 03:40 PM.