As above 100psi isnt near enough these days.
Go for the bigger one. I would suggest Alltec but I am biased, the machines are easy to work on, Chris and the team will help you.
Also with 100psi you cant really do hard floors as Altec will point out to you, its another string to your bow.
As to HSS they hire out Ninjas etc, probably seen better days but better than nowt. As for your Mon/Tues customers tell them your machine has broken down and are waiting for spares etc etc.
Rather lose a custy than buy a machine you are going to hate the look of if you buy in haste.
Why not put a shout out on here or on the Commercial side for a spare machine to borrow, just to help you out, guys on here are very helpful.
My opinion thats all.
Murky