There should be no issues with pressure loss, so I'm going to assume you are only concerned about the volume of the hose.
Even the best hose can seep odors if nasty stuff is left in there for long periods. I believe you will find most people will advise you to pump the head enough to get all the nasty stuff out of the hose and to the holding tank
I did a quick calc and come up with a volume of 1.4 gallons for a 1-1/2" diameter pipe that is 15 feet long.
Just consider that volume and how quickly your holding tank will fill up, and you can make an informed decision on how long the hose can be.