Sander1234

Good point.  I could have made that clearer.  

The joint sponsor is not establishing a household that includes you.  You are counted simply because you are the intending immigrant.  That you plan to begin your life in the USA at the joint sponsor's house, is irrelevant.  You will see nothing on the form or in the instructions that talks about establishing any household.  Don't read thing in that are not there.

You file an I-864.  You leave spouse as zero, so you don't count her twice.  You include her as the intending immigrant.  Your household count is 2.
 
Dad files an I-864 as your Joint Sponsor.  It's him and the intending immigrant for a household count of 2.  You can not combine your income with the Joint Sponsor's income.
 
Alternatively, your dad could file an I-864a as your Household Member instead of being your Joint Sponsor.  The household count would be 3.  You and your Dad can combine income.  

Personally, I prefer Dad filing as a Joint Sponsor.  You can do it both ways and see what the US Consulate will take.  
 
 

The US Consular Officers will also prefer Dad as Joint sponsor.

Here is another similar thread from a couple years ago.  Note the replies from @aaron2020 and @pushbrk, who is, in my opinion, the source for all things I-864....and more.
 
 

That's OK. 
That is correct as far a the count.
Thus, not required to be part of their household.
 
I don't see an issue.
 
Joint Sponsorship is quite normal.  Good luck.  
 

1.  Wife completes I-864 as Primary Sponsor with Household size of 2 (self and sponsored immigrant).
2.  One parent completes I-864 as Joint Sponsor with Household size of 3 (self, spouse, sponsored immigrant)
3.  Other parent (Spouse of Joint Sponsor) completes an I-864a as household member of Joint Sponsor to combine income with Joint Sponsor

There is never a guarantee that you will be approved for filing the I-130 petition with a Consulate, even with a new job offer.  It is at the discretion of the Consulate as to whether your case a) meets the criteria of an "exceptional circumstance", and b) work load levels and staffing allow the Consulate to accept the case without a serious impact on their workflow.  A decision on whether a case will be accepted cannot be made until all the information is available, i.e., the job offer has been received and accepted with a specific starting date.  So, if you follow this path, you won't know if your case will be accepted for sure consular filing for a while.
 
Amsterdam has the same authority to accept I-130s as Frankfurt.  They might not have the staff or time to do so right now, but who knows what might happen in the upcoming months?  They will not, however, respond and tell you they will accept your case for I-130 filing until you actually have a case (a job offer in your case) and can give them all the details. IMO -- and, it is only my opinion -- with their own cases plus all the other special cases and nationalities being routed through Frankfurt now, it is unlikey they would accept an I-130 from the Netherlands that has no connection to Germany.  But, I've been wrong before!