Chopcat :
Here is a pic of my Island hopper motor.
The mote marine bag covering the motor (Mote marine research is a marine wildlife organization here in Florida) is to fool the motor haters into thinking I'm green ( LOL)).
You can see the centerline of the motor is way back at the rod holders (quite a ways back from your position), when sitting in the rear seat the tiller position is just about right. My only regret (besides the motor really being a fresh water only motor, and not powerful enough, etc) is the motor is on the wrong side of the boat for me, and it's a real pain for me to pull the starter rope.
You can see from the pic that when my motor is tilted forward it is almost sitting on my lap when sitting in the back seat.
I really like the first pic Hildabrew has above, You could still use your rack mount system, and square tubing all around, but would just have the motor at the back of the brace instead of the front. Notice they also has a simple pin to remove the motor, that's an excellent idea.
If you have problems with getting the motor out of the water when it swings up, that front joint could easily be converted to a swivel joint so when the motor tilts it pivots on that front joint (only if needed, as I would have had to do on the Merc motor).
His second pic would also work but I think I would add a brace that touches the hull rail (like in your design) just to obsorb some of that rotational torque, which is a big problem on my smaller 2hp gas motor. Keep in mind a Torqueedo is fairly equal to a 1hp motor (30 lbs torque, where your Honda 2.3 will have much greater torque).
If you look inside your hull at the scupper hole supports (there aren't any), on one of my TI's I back filled around the scupper supports with urethane foam, it helped but what a mess that foam makes.
Another annoying problem I have is when I'm power sailing and on the tack where the AMA on the same side of the motor is up in the air, the prop sucks a lot of air and cavitates badly, so make sure your prop is plenty deep. I can't get my motor any lower so I'm kind of stuck with that problem. I just measured and the centerline of my prop is 16 inches below the rail of the boat (measured just behind the rod holder).
You can hear the prop sucking air in this video at around 4:10:
[youtube]http://www.youtube.com/watch?v=qiK_GM_U9pY[/youtube]
Another thing I did was went to a 7 inch pitch prop, the standard 4 1/2 inch pitch prop that came with my Island hopper motor was for much heavier boats, and my top speed was only about 4mph.
Hey if you get all the details works out I might invest in a Honda sooner than I had planned. From everything I have read, the Honda's are the best out there (I kind of regret buying that Island Hopper, but it's reliable, and is over 3 yrs old now, and keeps working.)