So, the results!!!! It works!!!!!
(i`d say 80% with what i had)

This does seem to work quite well considering i was holding the shifter in 1 hand and then pushing the lever click, pedal, click, pedal etc....Bearing in mind that the cable was`nt fastened ridgid and had potential to move slightly as my hand moved..... I said 80%....This means that it was down to the final 1/4 turn on the adjusters...however as nothing was "fixed" in a permanent position then that is the best i could get.
The gears did shift well and only had very minor chain rattle (as if trying to change up/down). I`m sure this would be sorted with permanent fixing to the bars and frame.....
So, thus concludes my test...And it will work IMHO !!!!
And thanks to Taxi25 for the loan of the shifters, I`ll be in touch to sort out the rest...
Thanks.....