Scorptec (Scorpion Technology) Physical store Questions & Answers

My M/B is an ASUS Z590-a, CPU i9 1100k, 64gb Ram, Using Windows 10.
Of the Three M.2 Sockets Only Two of these are available to Create Raid.
And I want at least Four M.2's in Raid0 with the Capability of Installing the O/S in The Raid.
So I have to Add More M.2 Ports to this M/B.
To do this I am open to suggestions However I believe the easiest way would be a PCIE M.2 Expansion Card.
Now I am aware that Cards with their Own Raid Chips may be easier to work with, However they are Quite Expensive.
I have been looking for a Card that would allow the Extra Ports to work with the M/B's Built-in Raid .
I have Ordered a Card from Syba Systems USA, Model SI-PEX40152 https://www.sybausa.com/index.php?route=product/product&product_id=1052&search=si-pex40152 .
In the meantime I have Tested My M/B to see if an Extra M.2 Port can be Added to my Raid by way of a single pcie m.2 add on card.
Well that card is visible in the bios, with a 970evoplus, and visible in the raid build area but is not available to be used in a raid array.
So I am concerned that my m/b may not allow me to use extra m.2 sockets this way.
Have I missed some setting in the bios that would enable these extra drives.
Or have I gone about it wrong and my m/b simply can't utilize extra drives this way

Hi scorpion, was asking how a store pickup will work? If I buy my good online how long will it it take to be delivered to your store? How will I pick it up? If I pickup my good form the store (after click and collect) do I qualify for the spin and win?