yes what you have is normal.. you can scrape it up and put it in some capsules for storage/ingestion. Just remember to poke a hole (or cut open one end) of the capsule before ingesting.
next time as people said, you can salt using more dilute vinegar. Also you could potentially do a (dry) MEK wash, but a lot of people seem to have trouble with MEK wash, losing yield or having inactive products or what-not. If I were you I would just put in capsules and consume as-is, it will still have great effects

for some people, a 300mg dosage of this acetate is a good amount. For me and some other people, anything less than 500mg is a very light social dose (great for concerts or being with good friends), and for a real mescaline experience one needs over 1g of this. Take 300mg for the first time to see how it goes and adjust your dosage the next times.
good luck and tell us how it went!