Boy/girl name (spelling?) and middle names

Lesleigh
So I don't know what I'm having. I'm 36 weeks. We've picked out a boy and girl name. 
Liam if it's a boy but want to spell it like Leigham.
And Lilly for a girl but want to spell it Lilleigh. What do you think of those spellings??? And need help for middle names for both.