I almost agree with the speed bleeders but don't find them necessary, just a hose connected to the bleeder and into a catch bottle works just fine.
On the trike, like anything else bleed the longest line first.
Many of the 1500 kits will disable the 'integrated' braking. So the pedal will control only the rear and the hand lever will control both front brakes unless the left one has been disconnected altogether. Not sure how Lehman does it.