in the new space time battle only a few teams work properly, the 1010/mabui and MD root warrior teams are in that category and to answer your question I don't think there is a way to make your main go first instead of WB asuma, thats just how it is. currently I am working on a cancer orochimaru traitor/sound team in space time you have to fight cancer with cancer.

use Ao in time space I am telling you he is like a S.A.M missile for nukers, if you got Ao no way in hell can 1010 nuke you round 1 with her cancer unless you have below average initiative.

I am sad to inform you that the orochimaru experiments failed because they nerfed the living hell out of him in 2.0, I thought it wouldn't be too bad but it looks like he doesn't prioritize using clones now. it used to be easy as you only needed sound ninjas but now oro traitor just uses anyone for his mystery he will even use the teams tank lmao!, they completely *ed him. its like hey remember the ninja that cost about 8k? yeah he isn't worth even 1k now. however I did come up with a mabui/1010 counter team provided you have Ao and he is faster then enemies 1010. I even have a team for countering root warriors

what I mean by that is that if you put the clones in the front they get destroyed before oros mystery and if you put them behind then they don't get damaged and oro just uses the ninja with the least health mostly its the teams tank and besides orochimaru teams don,t work because the opponent just damages your other ninjas and oro does the job for them.