WOOOOOOOOOOOOOOOOOOOO! Thank you for all the help guys! I got my first SSTO into orbit and landed safely with LOTS of fuel left, probably enough for Duna! Thank you so much for the tips and especially you KissSh0t, I used that intake technique and it works like a charm, the landing wasn't great, and I had to use RCS on re-entry to keep the nose up, but that's because I didn't manage the fuel at all... so I could do better, it also need more struts. But I still love this beauty, haven't decided for a name yet.