For Small to Medium Sized Sites

Here is where I would start with:

1. Server Management - SpinupWP - $12/m
2. Hosting - Vultr or DO - $12/m
3. Speed + Security - Cloudflare APO - $5/m

With Cloudflare and the Paid APO Plugin, you will go from like 200 requests/sec to 600 requests/sec.