bilsteins with OME coils? help

Ok guys...Ive done lots of research but cant quit find the awnser. Im looking at the OME lift with the 881 coils and shacklesfrom toytec. Thequestion im having is what do i need fir the front shocks. Will the bilsteins work with the new coils? or should i just save my money and use my exsisting shocks?

Heres the link on the lift im thinking about.
And i drive a 99 prerunner

 

The Billies should be fine, but I've read elsewhere, I forget where though, old age will do that to you, that they will work better with the OME shocks.