Yes that is good video..I think access is even better in the E53 for the hoses that go into cooler. No need to remove headlights.
attack the fittings attached to PS pump from below and the fittings attached to rack from above as I mentioned.

Use new crush washers where used, and make sure you account for any missing o-rings..like the one on the large u-shaped hose where it connects to the PS pump.

That tool from Lisle (Lyle?) is great.. There are other styles.. I think Harbor freight has a set of plastic clip-tools (?) that will also work

Be very wary of aftermarket PS hoses! I would not use Rein PS hoses, especially if made in China (many are)...There have been repeated cases of aftermarket PS hoses collapsing internally within a year of installation and causing blockages, and groaning, etc.