Wow, all very complicated stuff.
I have an easy method.
Go to any Till's Profile, turn on some Delay already in the Profile/Rig...done, awesome lead tone.
Play a backing track through your studio monitors and play some lead with it, now adjust your delay settings until the lead sits nicely in the mix.
Try some of the Delay presets (press Delay button then use Browse knob)...when you find a preset that works well take note of the settings and how the delay was created...if you tweak it then save your new settings as a new Preset.
Even easier! Find Bill Ruperts Holdsworth rig and just change the amp. Instant hi gain leads. Experiment with Tills cabs for fun.