Spamming interact with target will cause your alts to run around like retarded geese.
As for "use click"... you could make a click macro:
/click spell1
/click spell2
Or you can use your Logitech keyboard to press 3 and 4 and keybind Spell1 to 3 and spell2 to 4...
Or you can use an x-keys pro to keycap 2 keys into one and do the same thing...
Or you can tape a penny on your 3 and 4 key to do the same thing.
As long as there is no automation you should be fine.
Connect With Us