ways to enrich the distances of space exploration?

The problems we have are oxygen, resources etc. This is how I propose that we could fix them.

We work to build mass space stations floating forts in space in intervals. That are fairly good sizes. Inwhich crafts could be developed and launched.

As far as crafts could then build a mass b2 stealth bomber designed type of ship. Since its design would fit the navigations of high speeds. Or atleast some type of mothership(huge spacecraft)

Thus there is no need for light speed when you have bases. Which you could even launch satellites from. You could apply lasers or some sort of way to vaporize/break up asteroid , metors. And telescopes to find other hazards.

What do you think of this ? How could we sort of utilize it. (Let's say money isnt a problem).