RMB for kitten with chicken allergy? And other queries...

Greetings from India!

First time cat parent here with a five month old male kitten. He's being fed at least one all-raw meal daily and the rest is commercially available fresh/wet food from a brand that uses only clean ingredients.

I want to preface this post with a small disclaimer. As someone who was brought up vegetarian and never handled meat in any form all my life (this is a thing in India), nor has anyone in my family, putting together raw meals has been an intense learning curve but I'm enjoying learning. It's also the reason why I seem to have "stupid", beginner-level questions about really basic stuff.

So here goes:

  • Since kitty is allergic to chicken (and probably duck), I've been looking out for raw meaty bones to feed him (I'm using bone meal ATM). The only option available to me is mutton tail. My options are restricted because in order to ensure the highest safety standards it's best to go for packaged meat from reputed brands. What I see of local butchers around me doesn't inspire much confidence in terms of hygiene. So my question is, can a five month old kitten safely eat mutton tails? If mutton tail is too large, what can I do to make it easier for him to eat, short of using a meat grinder? Is it ok to chop the tail into smaller bits?

  • Cooked green mussels are available but is it safe to include these every day?

  • He eats at least one quail egg cracked over one of his meals every day. Is this is an OK amount of quail egg / too much?

  • He loves fresh goat milk and thankfully there is a local supplier who can get me some. It's pasteurized. Starting last week, kitty has had about 50ml goat milk most days as an end-of-the-day or too-early-for-"breakfast" thing. Sometimes he gets a little too hungry at odd times but I don't want to disrupt his usual feeding schedule so he gets a little goat milk to tide him over till the next meal. Is this alright to do?

  • Paws of Prey recommends adding some oily fish for vitamin D and EHA/DHA. Other sources say feeding fish daily isn't ideal. And I'm also unsure of whether this fish is meant to be cooked (to deactivate the thiaminase)? Please help!

  • How about de-veined prawns? should they be cooked or raw?

If there's anyone else here from India or South Asia in general I'd love to compare notes with you about your recipes/sourcing strategies.

Super grateful for any insights this community can give me.