Check weather for flying conditions.
Flight categories are defined by ceiling and visibility together, with the worse of the two setting the category: VFR needs a ceiling above 3,000 ft and 5 statute miles, and anything below 500 ft or 1 mile is low IFR. Crosswind and gust spread are the other half of the decision, since a light aircraft's demonstrated crosswind capability is typically around 15 knots and a wide gust spread makes the approach the hardest part of the flight.
Flight category and suitability
Category from the worse of ceiling (500/1000/3000 ft) and visibility (1/3/5 statute miles); score = visibility + ceiling + crosswind and gust components out of 100
This is a general planning aid only and is not an aviation weather product. Always obtain an official briefing, current METAR and TAF data and consult your aircraft limitations and applicable regulations before flight.
In the common convention, a ceiling above 3,000 feet and visibility of at least 5 statute miles. Marginal VFR sits between 1,000-3,000 feet or 3-5 miles.
A large difference between steady wind and gusts means rapidly changing airspeed on final approach, which is harder to manage than a strong but steady wind.
No — it is a typical demonstrated value for light training aircraft. Check your aircraft's flight manual and your own currency, both of which may be lower.