hmmm, Leimbach usually puts 90 degree fittings on their valve blocks... though it wouldn't surprise if the dyck you got that valve from swapped in straights so he could sell the 90's for three times the price of a straight?!
I don't bolt the filter can to anything. Cut the hoses to proper length and it'll stay in place.
The hoses will kink a bit if you try to bolt the 3 valve in it's stock location. I redrill and tap the holes for it 5mm back so the hoses have some room to fit around the swing motor.
The bottom cyls (boom cyls), you cut the hoses per the instructions, then fit each paired hoses thru the holders to the "Y" fitting, then go to the valve. It shouldn't be a problem with kinks.