You assume you have a route to show a bad hand and a moderate hand - Lebensohl or otherwise.
1. Do you make the weak bid or the stronger bid?
1a. Or do you take some other action?
2. Say you take one of the two actions in 1. (not 1a.) and partner rebids 3NT. What now?
3. If partner opens 2NT (21-22) what action do you take? If necessary assume there are two ways to get to 5♦ one showing no slam interest and one showing some slam interest.
4. What if the 2NT opening range was slightly different does it affect your decision - 20-21? 22-23? Where is your boundary?

Help

(2♠*) Dbl (PASS) ?
*Spades and a minor weak