Just a warning, though. When you build your lab, you will have a great IT system. It will be elegantly designed, and will be light-years ahead of your PI's structure. And you will wonder how they ever got along without it... until 25 years later, you realize your IT system is now a hodgepodge of duct tape and out-of-date systems that are not nearly as good as the new faculty are designing, and you will realize that updating it would require taking the entire system offline for more than a year and none of your postdocs would accept the new structure...
Of course, that doesn't mean you shouldn't do your best to set things up as carefully as you can when you start. Just a view from down the road. :)
elduvelle