Are you planning to use a pump? I have limited experience with soaker hose, mainly because it is too expensive for the poor results that it gives and short lifespan. Quickly switched to drip tape, some of which is engineered to work at low pressure gravity fed systems. Important as I switched from using water from the community system--chlorinated at pressure--to rainwater catchment with just enough head to work for about 100' runs of drip tape at a time.
I'm in the foothills of the San Pedro Mountains in northern New Mexico--at 7600' with about 15" of precipitation, zone 4b historically--growing vegetables for the local farmer's market, working at season-extension, looking to use more permaculture techniques and join with other people around here to start and grow for farmers markets.
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