If you want to get the most transparent sound you can from your Laney plug your pedalboard output into the FX return socket on the back of the amp.
Technically the inbuilt FX loop is for line level signals which are louder than instrument level signals, but as long as you can get a healthy volume level from your pedal board you'll be doing ok.
By doing this you bypass the preamp section of the amp where, theoretically, most of the tone colour resides.