Basement ceiling height is only seven feet (84 in.), so a chin-up/pull-up bar is inconsequential, as I wouldn't be able to use it, anyway. Mainly only need enough height to comfortably start squats with my 6' 4" frame

I'd been thinking the Fitness Reality 810XLT Super Max Power Rack ($235 on Amazon). But, upon reflection, that rack doesn't seem particularly substantial. If I have to set down/drop the bar quickly, I don't want anything moving anywhere.
In the interest of safety, now I'm leaning towards either the Rep Fitness PR-1000 Power Rack, Rep Fitness PR-1100 Power Rack, or Titan Fitness T-2 Series Power Rack. Probably the PR-1000 or T-2 Series, for their 2-in. hole spacing.
Westside spacing through the chest-height area with a bench would be great, but, I think I'm going to have to forgo that to stay within my
±$400 budget, unless anybody has any suggestions?