Audio Correction & Re-Recording & Mixing of Track

I am looking for someone to take 3 stems I received from a live performance mixing desk, of a piano, vocals and string quintet and try and create a professional output of the song 'Time to Say Goodbye' by Andrea Bocelli. The stems if I'm honest are in poor condition with quite a lot of bleed and also there are times you can't hear the piano so well in the recording (unsure if he wasn't confident or playing throughout). Anyway, I could do with an engineer adding additional strings and piano audio to the track (either computer generated or from a backing track retuned?) and re-create a track from these stems with additional audio added to the track to fill it out and make it sound better. Also if you can melodine the vocals so it's perfect and mix accordingly so it's perfect that'd be great!

The files are too big to upload here but can be downloaded: https://we.tl/t-gT3tA6cmYe