$UVXY #ShortCallSpread – Looking at…

$UVXY #ShortCallSpread – Looking at this one as a starter. Comments welcome.
Buying Jan 18 2019 75.0 Calls/Selling Mar 16 2018 14 Calls at a small net credit.
Fixed risk so no margin Calls.
If the VIX takes off I would add new positions with the same long side but shorts either with higher strikes or with shorter terms.