Tyler and 1st grade

As some of you may know Tyler started Kindergarten on his 5th birthday.  Everyone told me the best thing to do was to wait a year before starting Kindergarten.  I read up on it and felt like he was ready to go and would do fine.  Well, I sent him and he struggled in Kindergarten and struggled in 1st grade. Everything seemed to frustrate him and although I truly believe he did always try his best, I felt like he just did not get everything.
I feel like having Beckett was really hard on him and he really had a hard time at the beginning of 1st grade with all the work and having a new baby, again in the house.  I do feel like as the year went on he started doing better, but still not where he should be.  So, with all that said Chad and I have decided the best thing to do is to have him repeat the 1st grade.  This was such a hard decision.  I question myself all the time...Am I making the right decision?  Will he make new friends?  How will he react when he sees all his friends going to the 2nd grade and he's going to the 1st grade?  Will his friends tease him?  Ugh!  All these questions and uncertainties are bugging me.  I guess I just have to go with my gut and what everyone else has told me that if I do it now it will be so much easier than waiting until he is older.  I can not imagine having to do this in 4th or 5th grade.  He was the youngest boy in 1st grade.  All his friends are taller than him and some of them were beginning to tease him (not in a mean way or anything, but still)....
I pray we are doing what is in Tyler's best interest. 
We are meeting with Tyler's school administrators week to go over everything.  Why we want to hold him back and I really don't know what else to expect.  Please say a little prayer for Tyler on his 1st day back at school that everything goes well for him.  Thank you :)

***UPDATE***

We made it through the 1st week of school...well, almost!  All the kids have been sick with strep.  1st Ashton, then Beckett and last Tyler.  He missed 3 days of school :(  He ran a really high fever on Wednesday and scared the crap outta me (105.5)!  Luckily, I was able to get it down pretty fast with a cool bath and Tylenol.

 Tyler went the 1st day and seemed to do good.  He did say he wanted to go to 2nd grade and he missed his friends.  I am sure he did.  I can not even begin to imagine how hard it must be to go back to the grade you were in last year while all your friends are in a new grade.  It really makes me sad, but even that being said I still feel this was the right decision.  I wish he would be more positive about this.  I feel as if he feels he is being punished for not doing good....which he is not by any means.  He did do good last year, we just felt he struggled all the time and I / we did not want him to struggle in every grade.  I am really hoping this gets easier on him and he starts to have a positive attitude and well, forgets about it all.