If I racall,it wont make to much difference on the size of the pipe.The emitters run on pressure,not volume.I've got emmiterd on about 600' of 5/8 irrigation tubing and it works just fine.Im also gonna run another 1500' run this summer for fruit trees,but there wont be as many emitters on that run.
If I were you,Id wait for more reply's,cause I sure aint no expert,but I think 1" would be more than enough,for what little water you're dispencing.
