Did any current resident regret after choosing Med-Peds?

Hi i am a prospective Med peds resident. I am very interested in this combined specialty. I have some great plans later, but worried whether it would be a good decision to opt combined or a single specialty. Some of my friends are scaring a hell out of me. They are suggesting me to choose one program only. If i take both, they say i will be good for neither.

I want to choose this because of the wide-scope of practice that we can enjoy. I am also leaning towards subspecality later on.

1. Can any current residents give their honest opinion on this with pros and cons?
2. Of Med and Peds, which one is more challenging? I am good in Med but worried about my Peds experience.
3. I know it will be challenging for couple of years in the beginning, But all i care about is how confident can we be at the end of 4th year?
4. Can we have the confidence of a categorical pediatrician or internal medicine physician?
5. Are Med-Peds residents well respected during their fellowship interviews? and
6. What their prospects are compared to a categorical resident? of course if we have equal elective experience in our sub-specialty (fellowship) of choice?
7. Can you suggest some good programs in south?

I will sincerely appreciate any honest opinions.