I recently bought this guitar (serial is : 090814143)

I really like it. Great tones. I do have some questions

Can anyone help me out with the following, Keep in mind
that i am from the Netherlands (Europe).
- How old is this guitar and what are the specifications?
- Where can I order a black Pickguard?
- Where can I order a Tremolo arm?
- What is the best pickup height for this guitar?
- Are there any upgrade recommendations (like locking tuners that will fit)?
What do you guys recommend if you where owner of this guitar?
Thanks in advance!
Patrick