Yes you could, I suggest you put a new fresh SSD in the laptop. 

You will want at least a 2 TB SSD.

Blockchain is ~700GB at the moment.

So I could just get a old laptop clear out everything else and off I go 

User21000000

For Hardware you can find small used pc for a good price.

For Software I would recommended Start9 OS 

https://github.com/Start9Labs/start-os/releases

Am I right that my Zeus wallet is a LN node?

AskSN

Ask SN: Bitcoin node or not?

> True recommend any set ups?

Check out this post https://stacker.news/items/78866

For Hardware you can find small used pc for a good price.  
For Software I would recommended Start9 OS https://github.com/Start9Labs/start-os/releases

>Am I right that my Zeus wallet is a LN node?

I am not sure