You can get a 20% return from good bud with iso extractions. Just gotta decide which sounds better, 1/8oz of bud, or .7grams of concentrate. You need very little iso for that amount of bud. 6 fluid oz of iso max. I would do 3 extractions of 20 to 30 sec each in 2 oz of iso each time. use a strainer to strain the chunks of weed out, then throw the wet weed in a plastic bag with a little hold in one corner and squeeze all the last of the iso out. then filter the iso with coffee filters, and let evap in a flat glass pan. once evaped off, scrape and dab. pretty simple. I use hot water under my glass pan to evap the iso faster. with that amount you can go from bud to oil in 2 hours. I would freeze the bud and ios for at least a few hours in advance first though, which helps to not extract unwanted elements like waxes and chlorophyll.