I have put up such beams by myself.
Sounds like you did things the hard way.

How are you doing on your house planning?
You got kids that are sprouting up and going to start needing rooms of their own.
Have you thought of building your house in stages?

What did you like about the build above?
Do you like the slab on grade?
It is fast and easy, but then you have hard concrete under your feet for life instead of springy wood.

Is your trailer in the position you want your house?
Or do you have a better spot chosen?