you are not enough precice!
Your beams cross over the roof!
Create your pieces like in reality and you will have any problem ;)
If beams are on the good plane between them no problem for make any functions , sweep, loft, netwrok, join, extrude ;)
All can works for that you want!
You can't make something good on something false!
That is Framework : make the more simple possible!
In the reality you can't have this wood's node!
Resolve this and all will works like a charm!