I would like to know what the opinions are for my situation:

I arrive with my family of four (2 adults, 2 young children) at DUS on a Monday evening (~17:30) in June. We need to get to Schwelm to visit friends. We will be arriving from the US so we will have several bags. I figure my options are:

1) Taxi - expensive?
2) Limo - very expensive??
3) Train from Dusseldorf Airport Terminal - no Skytrain, luggage space?
4) Train from Dusseldorf Airport - Skytrain, maybe more luggage space?

With the new info on this thread, maybe option 3 may not be so good anymore (I think that the connection was at Soligen vs. Dusseldorf Hbf.).

Opinions?

Thank you (danke).