Is it correct this construction with the expression "have something in mind"?

Question

I have a doubt related to the expression "to have something in mind". Is it correct to add information between the beginning and the end of it?

For example, like this:
"I have so many things I want to do in mind".

Answer 1

A well-written advertisement from Ritten House Inn, Wisconsin contains:

• As you plan your trip to northern Wisconsin on the shores of Lake Superior, keep these top 10 Things to Do in mind.

However, 'things to do' is a fixed phrase punchier and more compact than 'so many things I want to do'.

• Always have something fun to do in mind.
• Self-visualization helps you keep what you're trying to accomplish in mind.
• Have a clear map of the one thing you'd like to accomplish in mind.

(from many examples found on the internet) are unremarkable, though perhaps the last is getting clunky.

Acceptability hinges not on grammaticality so much as idiomaticity here; how much material is inserted, and how complex it is grammatically, are the deciding factors.

• 'I have so many things I want to do before the first winter storms blow in from the north and make travelling nigh on impossible in mind.'

has become unacceptably unwieldy.