Chevy chassis is a different suspension. Ford suspension is actually affected by weight/ride height. I haven't seen that with the Chevys. No to mention the 2250 is pretty light to begin with.
It is true you should check the alignment after a break in period. But if tire wear is good and ride is good...carry on.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).