But the question is obviously not dead, Dog. (g)
I would say that it would certainly depend upon a variety of factors as to whether your method is adequate. The size of your boat should be irrelevant. Generally speaking, one should ensure that one's anchor is good and truly set before commencing any other activities. You may set the anchor on long scope, and then shorten up to short scope as necessary for those activities, with the ability to pay out more rode as necessary. The fundamental thought should be that conditions, plans, and activities are all subject to change while, the need for a properly set anchor will remain paramount to dealing with those possible changes. There are many threads on this topic, I suspect you're reading through them, and if they do not answer your question please ask away, again.
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.