Gurus in the house, my 1995 Mazda 626, 1.8 engine will be one year next month. I bought the car tokunbo with mileage of 216,106km and its now on 231,686km

Want to take it for major service, what and what do you think I should change
and check for.

WHAT I HAVE DONE ON THE CAR SINCE I GOT IT
1- I have so far change the oil and filter 3times planning the next one during the major service next month.
2- Changed one of the shaft while it was making noise while turning about two month after I bought the car.
3- Changed both front brake disc when the car vibrate whenever I brake at high speed.
4- Change the back right side brake caliper due to leakage.
5- Change all tyres to new one in May because I travelled a lot.
6- wheel alignment and balancing done twice: did it when i bought the car and was done again when I changed the tyres.


presently I hear some noise from the suspension system most especially when am I drive on an uneven(Bad) road, I read from the internet that it could be caused by the weak linkages and ball joint don't know how true.

There is also this knocking(Valve) sound from the engine especially when the engine is has worked.

please, with all have stated above what and what should I changed and what other things should I check for?
Thanks

waiting for comments

Thanks siena, I bought it toks and do not come with manuals.