It sounds like a reasonable amount. If after an hour you aren't feeling the way you want to feel you can always eat more. Eating some on bread sounds like a quick way to get high. I'd go for it. There's always more bud to buy The high is different. More all-over. Slightly fuzzier yet still up. It lasts a lot longer than smoking.

Some people cook their butter really long (i.e 3 hours in a crock pot) but I'm not sure if it is really necessary. Check out Better Bud Butter for just good info on making butter. And check out the Blackout Butter on that same site. Those two articles will probably answer a lot of your questions.