sorry I can't comment re the raised feeders, mine have always had their bowls on the floor and not had any problems.
Regarding kennels, although your baby is still only little, I think it's a good idea to have them used to being at kennels as you never know if a reason arises that you need to go away and there's nobody around to take them, you don't want to place her in a kennel in a rush.
My advice would be, ask around for recommendations, I have always asked my vet where he boards his dogs and found it's a pretty reliable indicator.
Make an appointment to go visit the premises and the owner, ask loads of questions about how their day is structured and be sure you are happy with the person who's going to be caring for your pup. They should be insisting one sighting your vaccination certs etc and possibly suggesting a visit for a couple of hours.
Believe me, I used to be realy worried about our first pup and didn't want her going to kennels, but one time we needed to, so found a good one, we had an anxious holiday thinking we were being mean :bigsad: she had a ball

Now I would always kennel my dogs, I know they are safe and secure, well cared for, if they need a vet, our vet will be called and we will be contacted and most of all they have great fun

AND we can relax and enjoy our trip
Good luck