A 2-3 day trip every month sounds ambitious, but a nice ambition nevertheless. I can almost guarantee you won't be doing multi-day trips that frequently, unless it is already that much a part of your lifestyle. But lets assume you will be getting four or five multi-day trips in a season. Why don't you get a used mountain bike or hybrid, without suspension, for the touring, and get a decent road bike for your regular rides?
Mountain bikes with slicks are more sensible for touring than touring bikes IMO, used MTB's don't cost much, are more stable on descents when loaded down, and are more comfortable for long days in the saddle.
A straight up road bike would give you more joy on your local rides. I have two road bikes, and an MTB I have used for touring since 1993. I would not trade my MTB for anything, nor would I ever want a touring bike to replace it.
I think trying to get a 'tweener bike usually results in some dissatisfaction, based on my many friends who have tried that approach.