H4 or wait for TPS extension (What is the better option?)

Hello Sajha Friends, I am looking for suggestion on what shall I do? Its real situation which needs proper suggestion, so please share ideas which can be useful My only status for now is TPS. I was in F1 before. I am working under TPS. My husband just got offer from his work to change his status to H1B. What would be my best option to go about changing status? Should I apply along with my husband for COS or should I wait? Since we got news of temporary halt today (http://sajha.com/sajha/html/in... I am pretty hopeful that Nepal will be included soon. So my dilemma is what happens to TPS status once I change from TPS to H4? will the TPS status automatically voids once I apply for H4? If TPS prevails beyond June 24, 2019 and If my status is changed to H4? can I reapply for TPS?