I would not plan on any ladder type rise from anything less than full vacuum because they don't have much CFM, which is needed for success with ladders. I used a Guzzler pump for our first introduction to vacuum. It was a great improvement over gravity. I think our total mainline (mostly 3/4" and some 1") was about 2000' total. We had about 400 taps on our single Guzzler.
Mike
Tapping since 1985 (four generations back to early to mid 1900s). 200-250 taps on buckets and then tubing in the mid 90s. 2013- 275 taps w/sap puller 25 gal. 2014-295 taps w/sap puller 55 ga. (re-tapped to vacuum theory) 2015-330 taps full vac. 65 gal, 2016-400 taps 105 gal, 2017-400 taps 95 gal. 2018-additional 800' mainline and maybe 400 new taps for a total near 800 taps. 2x6 Leader WSE (last year on it) supported by a 250 gph RO.