re Deus X: it is one of those corner cases. But it actually does a lot of nice things. It trashes an oversighted Janus, it blows up Jintekis Fast Advance Junebug stash and protects me from Snares. And basically every Test Run can copy for Deus X, because well you trash it.
re Toolbox: I'm perfectly fine with one, I usually build it up in small increments (Memchip, Rabbit Hole, Cyberfeeder) and if I draw Toolbox fine I pawn extras off until I am only left with the console and maybe Cyberfeeders. Or you could keep some stuff for special match ups. But if I don't draw it, no big deal.
re Kati Jones: she is basically my 4th Armitage, I don't rely on her (http://stimhack.com/the-mathematics-of-kati-jones/ )
re Morningstar: while being super expensive at first, he really makes it up over the long game (and actually only needs a couple of runs to get ahead). There are almost no barriers that he can't break (and that get played). Also Personal Touch
As for playing this deck, the goal is to rig up fast (Modded, Diesel, Quality Time) while trying to not let the corp get away with cheap agendas (Femme + Test Run). Adapt your breaker suite to your opponents Ice and then start controlling the corps R&D with Makers Eye and Medium. I used to get angry when Makers hits nothing, but now I'm often actually glad, because it usually means I have three more turns to rig up and you just can't let that happen, because I'll likely have the next Makers Eye in time and have full control over your R&D.
I'm actually not sure HQ Interface is needed here, but it is kinda nice.
So probably lots of rambling, lots of unorganized thought. Have fun with it, heck even tear it apart