Start with the underlying
Look for strong structure, a constructive 10/21 trend, a useful location, and timing that is not badly extended. The option comes after the chart.
Think about duration and liquidity
More time can reduce the pressure of a near expiration, but it does not guarantee a good outcome. Favor contracts with clear liquidity and understand the bid-ask spread.
Define the thesis risk
Know what price behavior would weaken the thesis and how the option can lose value even if the stock does not move sharply against you.
Advanced takeaway
A LEAPS contract is a vehicle, not a thesis. Structure, timing, and risk still come first.