Some advice for care of my new little guy!?

In regards to when to get him neutered, it is generally recommended at about six months old, but this does depend on his development! Your vet will be able to advise, as he will be able to not health status, size and development.

He will spray once he has reached sexual maturity, so neutering at around six months should be sufficient to prevent this!

I don't know about the food question! Again, I would probably speak to your vet and see what s/he recommends

I think, as you've been given the all clear on your kitten's health and he has had his first vaccination, I would say that you're ready for the introuctions stage!

You can find lots of information about how to go about this around the site! I can grab you a couple of links if you like!

I don't know if it is common practice in Austrailia to do pediatric spaying and neutering, but here, some vets will do spay and neuter as early as 8-12 weeks. My vet does our spay and neuters at 12 weeks, and we have never had a problem to date. We have a 4 year old male who was neutered at 11 weeks old, and he has never had any health problems, and he is a big boy at 18 lbs. He doesn't have an ounce of fat on him.
I would say the sooner the better to have him neutered. Here is a website that I often refer others to, regarding early altering.
http://www.winnfelinehealth.org/repo...ly-neuter.html
There are other sites as well, that refer to early altering cats.
I would speak to your vet regarding the prescription diet food.
It sounds like you have done everything, and are ready to sit back and enjoy your new fur baby!!
Congratulations, on your new family member!!

many people will tell you different things in regards to the age the "can" get neutered. Here in Australia, the shelters will neuter kittens at a young age (8 weeks or so) but my vet wont neuter until 6 months.
No, 12 months is too long to wait... I wouldnt do it any later than 6 months. Are you letting him outside? If so, then I wouldnt let him outside until he has been neutered.
My Tipsy was neutered at 8 weeks (shelter kitty) and he still sprays... never inside and only first thing in the mornings when I let him outside - marking his territory for the day I guess

I agree - sounds like you can begin the introduction process
here is a good place to start
http://www.thecatsite.com/forums/showthread.php?t=67321

I also cant help much with the food question, but there are alot of our members that should be able to help

just call around a few vets in the area and ask them at what age they will do it... probably the easiest way

You can neuter/spay from about 4 months on. Its what your vet is comfortable with - some don't like to neuter under 6 months (I think they go somewhat on weight of the cat). I like neutering my males at 6-8 months.

Its hard to tell when they might spray. If they are around older cats who are not neutered and do spray, they could learn this earlier. But if your cats are neutered now, then he shouldn't start young. So I'd get him done at about 6 months to be safe.

You'll have to talk to the vet about letting him eat the CD. Personally, I don't like Science Diet. I prefer Iams or Nutro Max for my cats. Kitten food does NOT have to be fed for a year. It depends on the size/type of kitten. For example, a small cat like a rex or oriental would be very fat if feed kitten food for the first year. My rex kittens ate kitten foods at about 4 months - after that they ate the same food as the adults because they would have picked up too much weight. If the kitten is a larger breed (like a maine coon) then you might feed kitten food for 8 months. You have to judge how the kitten is growing.

For introductions, you should be ok to introduce now - he's had 2 sets of shots. Introduce the kitten slowly - one cat at a time. Expect some hissing or growling and let them alone unless they really get into a physical fight. Most kittens will respect older cats and the older ones will put the younger one in his place. You might want to sprinkle some cornstarch baby powder on all the cats to make them smell the same