ilijabozovic I see now what you are doing and it shows how many different good ways ST3 can be used for, if I was in your situation then I still would not use the keyboard for click because you are running live you will have consistent tempo variation especially in songs with drastic changes in tempo , ST3 runs using time instead of a midi controlled sync like your keyboard , so if you program a set time for a song like in lyrics only your lyrics will smoothly move through that time and you can adjust that as well to compensate for solos etc.
But you don’t get click out of ST3 using Lyrics Only.
By using a normal stereo track in ST3 you get a lot more benefit out of it.
What I would do is to record 10 minute 3 audio click tracks and use the artist column and call them CLICK SLOW, set at 60 beats per minute, CLICK MEDIUM, set at 120bpm, CLICK FAST, set at 160bpm, distinguish it from all other audio in ST3 , you only need to do this once, you load your text and chords, you use the END TRIM to set the length of your song , you use the SPEED to set your tempo for this song .
Now you have everything from one device to, easy song selection to warn others of next song , when you hit play you get your click as well your lyrics will scroll to the set length of the song , the reason for 3 different audio click tracks is to get you in the ballpark of tempo needed because speed setting has limited speed change capability .
There are other advantages of this system as you can then audio segment this audio so you could jump back to another part of a song with ease and get your lyrics/chords you are not fixed to a single run through a song and rehearsal time is more efficient , you just hit the section of a song you need to rehearse instead of having to scroll through a song every time.
I would not be using Lyrics Only for a number of reasons as it has limitations while normal stereo tracks give you everything lyrics only plus more.
Good luck with it , you definitely are using the best software to do what you need.