I wouldn't worry about it. Put on a good fuel filter. If the filter clogs quickly then you may want to clean it out, otherwise why waste time and money if it may not be a real problem.
Mercedes already have a couple of inline fuel filters anyway.
BTW, if it runs and you want to get rid of it.
I'm looking forward to taking it apart and seeing the workings of it. I'll chalk up the money / time spent as a valuable learning experience if it was an overkill but I'd rather err on the side of caution at this point and enjoy tinkering and learning about something new.