Why don't you drive the buggy a bit first...the only reason to change the shock towers is either if they break or you need further adjustment options...I don't think you're in either of those situations yet since a) you just got your buggy and it can't be broke, and b) you can't have dialed it in yet in such a short time...furthermore, how will you know what the effect is of a stiffer tower or a different adjustment option if you've nothing to compare against? Drive it a bit first, then get the hop ups you feel you need...