No problem with doing either of those things Gaspipe. That is exactly what I am doing. Just make sure you have a pump that can handle the head pressure. My run from the RODI and saltwater tanks is 45' to my aquarium room. Was waiting for the Versa dosers to become available since they can handle the distance but got tired of waiting. Talked with BRS and to my surprise they recommended to use the booster pumps that you use on RODI systems and they push and pull water just fine. Way more volume than a Doser. I was shocked because I have never read on this site of anyone utilizing a booster pump for this application. I always thought you needed a water pressure input for a booster pump to work but I was wrong. The reefing expert at BRS said that some of there employees have been using booster pumps for awhile without any issues. No pump maintenance required.
Thought I would add this little bit of info on booster pumps in case others have a distance issue like I have.