So, after two days eagerly swallowing every post and guide about building witness and seed nodes, i finalized the implementation of both servers, as seen in my witness publishing post here https://steemit.com/witness-category/@windforce/windforce-for-witness .
For the witness, i prepared beforehand a quite powerful dedicated server which i rent from 
Installation for the seed went relatively smooth, buth then the blockchain has increased considerably, and 8GB memory is now barely enough ( after waiting half an hour for one of the numerous replay, the system runs sometimes out of memory at 95% - this happened to me like 10 times ). I therefore upgraded the seed server to 16G memory as well. Got it eventually working , and it's doing it's stuff now at a very good latency every time i checked.
You can see it in the steem seed nodes list here https://status.steemnodes.com/ , mine is named "seed.windforce.farm".
The witness install, which is normally more complicated than the seed, went smooth like a baby's cheek, and is doing his tuff at a steady pace since then.
Last but not least, i already got votes for witness from 
For everyone reading this post, if you have available witness votes, please consider voting for me as witness, and help me further support the great platform that steemit is.
Please go to the https://steemit.com/~witnesses page, roll down to the bottom of the list, type windforce in the box and click Vote.