Better to stick a toe in the water first than to dive in, I say. Your criteria only reflect four of the five questions I should ask before buying a fund. I haven't taken returns into account in any way. They aren't vital factors for me. A fund's past returns tell us next to nothing about its future.
Good funds stay successful sometimes, and sometimes they fall into the dumps.
There's no way to know. That's why three of the five lies about fund manager talent are about how unreliable history is as a guide to future performance. And even if history did lead to reasonable conclusions in theory, recent history would be no help whatsoever. That's because the past few years have been pretty one-dimensional. As a result, looking at funds' trailing returns doesn't really reveal how they might fare under a variety of conditions.