Yes, but with some minor changes.
Nullify is a Supernatural ability and initially only works on targeted Spells only rather than canceling area spells like a five levels early unlimited and overpowered and nearly action free Iron Heart Surge. And speaking of the action economy, using Nullify makes you forgo any AoOs the action would provoke (no matter of cancellation was successful or not), Touch of the Void is a level based check, Terminate is not a Saveless way to kill things and at level 10 the Nullblade doesn't become immune to every worthwhile status condition ever printed. I'm sure I know there is other stuff, but that's just what comes to mind after a quick skim through for names.
I've never looked at the Architect and really don't have the time now, but I can tell you now that the Architect's Unity of Purpose is outright banned with no questions asked.
It's just this game isn't running on a TO level and you're not fighting Pun-Pun. It'd be a little unfair for you to pack cold fission super devices when everyone else is using bows & arrows. I think you'll pick up what I'm laying down here. You have to trim the overpowered aspects of the homebrew to be more compatible with your other plays, and the apparent "laziness" of your DM wanting to use printed monsters rather than spending hours advancing and applying templates.
