mmmmm...
The AFM would be going mental with this setup. You need distance away from the throttle body, it's too abrupt changes for the AFM to react to.
The vacuum lines either need to be tee'd up with another vacuum source depending what is or re-installed. Pull off the vacuum line for the brake booster and try stop the car, see what happens. (no don't) Certain items are operated via engine vacuum and this can cause a mozza of shit if the vacuum is out, brake efficiency (you don't want that now do you boy?
- brake fetish kid) is lost due to a booster barely working, FPR works off vacuum, etc.
I'd say an overall length of roughly 1m is good.
With that setup you will probably notice better throttle response and not so much torque at higher RPM.