Hello,
For all new users and even those more experienced, we post announcements with some information that is always helpful
For example
EOL means End Of Life - so is a sign that you can move to either a LTS one, or next one that is supported. MHWD should offer you the choice to install them. Always keep a LTS installed together with another version you want to use, or even two LTS kernels.
Regarding your main issue: speed of the system compared to Windows, it depends.
My system is not even half of those specifications, yet is rock solid and responsive, never was better …
Please share from terminal the output of:
inxi -Fazy