pole barn/steel building/shop

[fly boy]

I am going to the process of hiring someone to build a 40'x60' pole barn on my property now. I've contacted Cleary and Steel Structures of America, and have appointment next week to get quotes. Neither places will do the electrical, and you have to do the leveling/excavating yourself. Standard concrete floor is 4-5" fibermesh. Some places will do rebar concrete. I am new at this as well, and i'm also learning.

How did it turn out?

I'm putting up a metal building right now. Down to trim. 40x60x16 and I've put in every bolt and screw myself.

My neighbor just put up a similar pole barn, dirt floor.

Pros/cons as I see them;
I had to have a foundation engineered for about $500. Concrete cost more than the building, about $21k. He can pour a slab whenever he wants and it doesn't have the deep walls or footers.

Mine is clear span. 16' at the side and almost 20' in the center to the roof sheeting. He had trusses, so a flat ceiling.

This part could be all in the shopping, but I paid about $15.7k for my engineered building with big ass supports and delivery. $16.4k with tax IIRC. He paid about $20k for his, just the wood and metal.

On the exterior, they look almost exactly the same.

ETA neither of us have done any utilities including electric yet.

What needs to be done pre-build if I plan on a dirt floor, concrete a few years later?

examples:

https://www.menards.com/main/buildin...694867&ipos=24

https://www.menards.com/main/buildin...895392&ipos=68