I'd be trying to play Nacho and Vardy together as much possible now up to the end of the season.
There's a good player in there with Nacho, and we know Shinji/Vardy can't be a long term partnership for us. Now's the time to give Nacho an extended run in the team and the chance to prove himself up to the end of the season alongside Vardy so we can assess our options better before the summer - but still kick on to claim 7th place this season.
My team for this would be:
Schmeichel
Simpson, Morgan, Maguire, Chilwell
Mahrez, Ndidi, Iborra, Albrighton
Vardy, Iheanacho
I'd also like to get Silva more involved before the end of the season and, again, give him a run of games. But Brighton will be a tough match and there's still a job to do - and Silva has been away for internationals whereas I assume Iborra hasn't so will be a bit fresher.