You’ll have an easier time talking about it here than on another public forum, where such discussions are banned outright.
Rule, Constitutions, Horarium, Formation Program, Remunerative work, stable source of habit parts and at least three or four stable members are the requirements.
As I tell the founders on our Fullerton Society forum, just live the life and the guiding documents will write themselves.
A Chancery can’t approve a concept. You can pass the idea by them, and ask their prayers, but you’re the one who has to prove that this is indeed your new way of life. Be prepared to submit to them whatever you already have on hand concerning the charism. Be sure this is somehow helping to fulfill the bishop’s pastoral plan.
You can wear a uniform outside of your convent, and the actual habit within. Don’t be seen outside the house in the habit, lest you be thought presumptuous.
There are other forms of religious life besides religious institute – Society of Apostolic Life and Secular Institute.
Right now, you are your own lay associates/third order. Develop the plan of life for that first. The vowed version will necessarily go into further detail regarding conventual life and how your group interprets the evangelical counsels.