No,not acceptable..get the marks right on...
But,if the water pump locked up on this and took out the timing belt,you probably have bigger issues now.
This is an interference engine,meaning that if the belt breaks, the valves will crash into the pistons.Depending on the rpms when it happened,it may be worse than you think.
If you dont have any cam holding tools,then you can get it perfect,you just have to mess with it.
Careful when turing the rear cam with a wrench,you dont want to open the valves into a piston just in case there isnt damage now.
You can hold the rear cam with a wrench while installing the belt.