[Need Help With Base]

I'm just talking about the flooring here, I'm gonna use Cinder Walls no matter what. I was just wondering if I can use Wood Floors for the rest of the floors. Cinder IS indestructible on the server I play on, but not wood. I just don't wanna use Metal Floors on every floor because It's gonna cost ALOT of money. So basicly what I wanna do is Sandwich Wood Floor levels with Metal Floors so they can't just break through my base from the top. And the question is, Can anybody get into my base if I do so?

[Need Help With Base]

But if my second floor is wood, can people get into my base?

[Need Help With Base]

I wanna build a full Cinder Block base, but the only thing stopping me is the Metal Floors. They're kinda expensive to make/buy. I was thinking that I can build the whole first floor with Metal Floors, and then all the floors above with Wood Floors and still use Cinder Block Walls. Would there be a problem? Can someone get into my base?

 

Example:

Bottom Floor: Metal Floors + Cinder Walls

Second Floor: Wood Floors + Cinder Walls

Third And Last Floor: Metal Floors + Cinder Walls

[Building A Base]

I wanna build a full Cinder Block base, but the only thing stopping me is the Metal Floors. They're kinda expensive to make/buy. I was thinking that I can build the whole first floor with Metal Floors, and then all the floors above with Wood Floors and still use Cinder Block Walls. Would there be a problem? Can someone get into my base?

 

Example:

Bottom Floor: Metal Floors + Cinder Walls

Second Floor: Wood Floors + Cinder Walls

Third And Last Floor: Metal Floors + Cinder Walls