Can i sell my home after 1 year?

[Account Closed]

If i buy a primary residence 🏠 for 120k

But its worth 200k It means its 80k in equity.

And my mortgage is 1,200

And I do a lease option and se/he gives me 3,000 downpayment and she/he pays me 1,500 per month its ( 1 year lease), (after that year he/she will buy the buy the house ) so my cashflow will be 300per month and she/he will live in the garage for 1 year and i will live in the house for 1 year because its a primary residence then after 1 year she/he will buy my house and she/he will pay me 220,000 so its 100,000 profit that i can use to buy 2/3 properties.

Are my math wrong???

Is it a good plan???