Good evening GermanSumo,
So, I have seen this question sitting here for a few days and was giving it some thought while waiting to see if anyone else chimed in with plausible answers for you.
Perhaps instead of trying to build the character via the lifepath method for which you already stated that you are not very happy with all of the choices. Why not use the point buy method as described on pages 89-90 of Battletech ATOW (2nd printing)?
In truth, so many folks get caught up on the minutia of every little +/- that the life method describes and worries so much that it's not going to be the exact character stats that they like that they forget to think about the character that they wanted to create in the first place.
Unless you yourself or your GM is limiting you to using only the life module system I recommend giving the point buy a shot first. Plan the attributes, skills, and positive and negative traits out in your mind. Imagine how you really see this RTC Commander's roots and upbringing to justify the stats, skills, and traits that you are assigning him/her. Be humble and truthful with your assessment of this character as you build him/her. If you make them the jack of all trades with nothing but positives then what true fun is that? Give him/her the flaws and story hooks that may justify some of those stats, skills, and traits.
In the end, you'll either find that you may like this method better or perhaps, of course, you may just learn to like the structured life method more.
Hope that helps!
-CoreWatch