I wouldnt spend 15k on a bike. Mines worth 9ish so id spend 9 to 10.
so, you wont spend 1500 on a great shock and linkage package but, you will drop 9-10,000 to replace the bike but, you are not stupid, you are just poor? ok, I got it now.
I find it funny how people come to the internet to "ask for advice", get that advice, then argue the advice, do what they want, and not get the desired result...
then, come back to the internet and ask the same question, in a different manner, only to get the same answer as the first... and proceed not to listen to advice, and do what they want, and continue not to get their desired result, and wonder where they went wrong.
a great racer once told me... pick a school of thought on suspension (pick one suspension shop, person, after personal research ), STAY WITH IT (them), DONT DEVIATE, AND LOOK FOR ANSWERS ELSEWHERE, stay the course, do your homework, and make changes, and document the results, and discuss those results with the tuner, to get your desired result.
you can dial a wrong number and get suspension set up advice. but, if you listen to EVERYTHING SUSPENSION, AND TRY TO CHASE EACH "WHAT IF", you will be chasing your set up FOR A LOOOONG TIME.
also, you have to look in the mirror too. slow in, hammer fisted out, wears tires out (even on smaller bikes), and "shows" suspension issues, that you may not be able to overcome with clickers, springs, links, and valving.
you may need to re-learn how to enter, and exit corners. this may make you slower at first but, higher corner speed, smoother exits, will lead to better tire wear, and quicker lap times. you have to leave your ego at the door, and step outside yourself.
there is no one "magic set up". it is whatever you are comfortable with, to get your desired result.
my thought is, get with LDH, listen to him, follow his explicit instructions, and get your bike properly set up. that would be the best start. you cant lose. if it doesn't work, part the items you bought, sell the bike, buy the bmw, and start again. good luck. Ski