Need Suggestion For My First Dedicated

Hi, I just ordered a dedicated server from ReliableSites.net with this spec:

Dedicated Servers - Quad Core Server - Intel Xeon E3 1230v3 (PNJ)
DataCenter: New York Metro (New Jersey ???)
Port Speed:
1 Gbps Dedicated Port
Bandwidth:
10,000 GB Premium Transfer
Memory:
8 GB DDR3 RAM
Primary Hard Drive:
64 GB Primary SSD Drive
Second Hard Drive:
64 GB Second SSD Drive $4.00 USD
Third Hard Drive:
64 GB Third SSD Drive $4.00 USD
Fourth Hard Drive:
64 GB Fourth SSD Drive $4.00 USD
RAID Array:
RAID 10 (Requires 4 Hard Drives)
Hardware RAID Card:
Software RAID / No Hardware RAID Card
Operating System:
CentOS
Control Panel:
No Control Panel
Additional IPs:
5 Usable IPs (/29)
KVM Access:
Dedicated KVM Access with Virtual Media
DDoS Protection:
10 Gbps DDoS Protection
Server Management:
Self-Managed/Unmanaged
Total Price $51/month

This is the first time I order a dedicated server and I have no experience at all for a dedicated server. I want to migrate my 2 linodes VPS here. I plan to create only 2 VM here (again, no experience for this task) , maybe I opt to use Virtualizor 2 license VPS - one VPS 6Gb RAM for centminmod webserver and other one for playing & testing VM.

Here's my questions:

1. Should I use RAID 10 - 4 x 64Gb SSD or RAID 1 - 2 x 128 SSD (budget is not much) ?

2.Which virtualization software should I use ? Easy to install, configure, and should support software RAID. I heard that Proxmox doesnt support software RAID and so with VMWARE ESXI Free, but I dont really have much knowledge about virtualization before.

3. Ping time from my end is 280ms , use tracert and got 20 hops , all of my client websites are Drupal sites. Main target audience is also where I'm living (south east asia) 280ms away from my server. I plan to use KeyCDN to make it faster. Am I doing right decision here or I just killing my business by provide slow accessed websites for my clients ?

4. I know this is a little too late as I already ordered the server, but anyone can suggest West Coast Dedicated Server with hardware specification and pricing close to ReliableSites.net ?

5. I'm really sorry that I dont know that centminmod has affiliate link for Reliablesites.net, if so I will use that link to support centminmod. I saw advertisement from WHT by the way.

Thank you

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I already ordered the server and now still playing with it. FIrst order, I only order 3 SSD 64Gb and set it as RAID 5. Then I ask them to add one more SSD 64 for RAID 10. So I assume they will help me if I want to change disk config to 128SSD, no ??
Its the first I ordered Dedi server so I dont know if theres any rules that not allowed customer to change its disk / RAM/ config in the future.

This is exactly what I want to know, does have a server far far away 280ms - 300ms will make website seems so slow if my target audience is where I'm live. Does CDN will help ?

I have browsed and read a lot but only found mixed opinions. Considering the price of the dedicated server, if CDN will help a lot then I think it may justified.