Thanks for the response. Can you provide some clarification on what reasonable weight training and "lifting more weights than you are prepared for" means?
I'm aiming to achieve at least a 140kg squat before I advance to a different program. Is that an unreasonable weight?
Like Stuward already stated and which I don`t want to repeat... I liked the following article for your question "what a reasonable weight..." is:http://www.exrx.net/WeightTraining/Weightlifting/WFW2005.html
Or, like Boris Sheiko put it (from the official sheiko-forum):
...Another concern in training novices is they frequently overestimate their possibilities, with a strong sense of rivalry present between them. In each training session they try to lift maximum weights which can lead to injury and poor technique development. One very important way of mitigating these issues is to group the novices so that they are all of very similar ability. This way they do not attempt to replicate what another student has done which may be beyond their current ability.
The trainee must remember that during the study of classical exercise technique, the principle value is not the weight of the bar, but rather the number of repetitions. When learning technique it is not possible to allow large stresses. Learning technique is best done with moderate weights. Then the weight on the bar increases proportionally to mastery of the exercise and improvement of the general physical state of the student. Both strong and weak stimuli are not optimal for the formation of conditioned reflexes. Only moderate stresses can ensure the successful acquisition of effective movement patterns of the classical exercises and contribute best towards physical development, which are necessary for lifting maximum weights.
In the end of the month we carry out competitions among the novices to determine the best classical exercise technique, not the amount of weight lifted. These competitions help the trainer to reveal the effectiveness of instruction as revealed by the errors of execution of exercise technique. This makes it possible to introduce corrections in the instruction procedure and to additionally include exercises which influence the correction of errors.
Thus, the primary objective for the novices is to obtain proper classical exercise technique and also the improvement of the physical condition. ...
So your main concern should always be to concentrate on proper technique. Everything else will come along with time... Setting a fixed number as a goal before switching to an intermediate program is o. k., but be flexible enough to switch earlier in case the simple programming doesn`t work anymore (or stay with it, as long as it works for you).