Hi BangoO.  My advice about the GTS was based on:

1.  The GTS is just a variant of the car you have now.  Stiffer, a bit "more sporty" but I think you will be spending your money on a marginally different car that in some ways is more uncomfortable to drive. The marginal difference is just not enough to go to all the trouble of changing, buying,  registering, insuring, etc.   

2.  You seem a bit frantic about your choices, jumping around from idea to idea.  Believe me, I understand this approach, as i have acted like this on many occasions.  But i have found, for me personally, that it helps to settle myself down and let a better solution emerge.  Probably sounds preachy, but that's my advice.  You may find that if you wait a bit  good 991 will appear, and that will be a true change worth the effort.

Good luck.  We are all so fortunate to be considering all the wonderful Porsche options...