150 foot of 2 inch.........50 foot of 2.5..cut into 2.....25 foot sections....anything over 150 of the 2 inch is where you are really going to see the difference.......
then just pull off only what you need of the 2.5..either a 25 foot section or the entire 50 foot.......
if you have a really long job to do then throw a extra 50 foot of 2 inch in the van and use it....adding more 2.5 is not going to get you as much as adding the 2 inch...
this is my basic set up....that I use on both my thermalwave and the
570.......I have messed around with this for a long time to find that sweet spot for what is going to give me the best performance.......
BTW...you don't have to kill yourself man handling the 2.5 inch hose....you should already have your 2 inch run down...just drag off and when your done reel it back up....