Cpanel VPS Optimization for Wordpress

Dear Freelancer, 1. We have a VPS with 8 GB, 4 vCPU, 150 GB SSD. 2. We have setup Cpanel, and other security tools within it (CSF, Snort, etc.) 3. We have setup Cloudlinux + Litespeed 4. We have around 50 Wordpress Sites within it 5. High traffics sites, yes. The problem is: I don't exactly know what the problemis . But what I need is: 1. Please do configure my VPS for best performance. Currently the load average is [login to view URL], at maximal around [login to view URL] (may I need you to reduce it to average of [login to view URL]). In the night, the load goes to [login to view URL] for about 6 hours or more. 2. Mysql tuning is a must. 3. Litespeed tuning is a must. 4. The last but not the least, I want better performance. (I hope I don't waste money buy using cloudlinux + litespeed). If you have better suggestion (cheaper) then this, please do include in your brief description (but I do only want to consider the one that has proven in maintaining such projects before) 5 Please write down and/or create all the manuals of what you have done. I have a similar 'problems' (symptomps) in the other VPS, that I need to implement with this configuration. I need to make sure you are the one chosen will be an expert for this project. If you have any previous case or portfolios, it would be a benefit. Please feel free to screenshot and state what load averages have you been maintaining this server/VPS at, and how many Wordpress are on there.