Great to hear that the project is growing and going strong.
As for the spread I think it is ok as it is, but you might have to have a backup plan if you see a lot of buying and selling inside the spread.
If you see huge volumes being offered inside the spread you might have to tighten it temporarily, but this has to be planned and thought trough properly ofcourse.
I don't know the consequences of doing something like that and if you'll see negative consequences of it then it might be better to not do it.