Here is an excellent chart I found on this site when I first started lurking here:
I say +1 to the scale and feed 10-15% body weight. This is what I use on my collection and it has been working well for me. I won't be feeding any prey items over 150g even for large females when i get there. I feed every 5 days for Bps under 600g. Anyone over that get fed every 7 days. This is of course when I am following the feed schedule to a T. Sometimes I miss a day or decide to feed early or later depending on my life schedule. Weighing will give you an idea of prey size before you eventually learn to guess by sight of the prey what needs to be fed. Feeding multiple hoppers will be ok until they are gone but it is going to be some work. Good luck!!
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