How should I fund my help-to-buy home purchase?

I’m wondering if I should try to borrow more in a mortgage and get a smaller government loan
Q I am currently in a process of securing a mortgage and help-to-buy equity loan on a new build with a purchase price of £420,000. My mortgage adviser has proposed that, to fund the purchase, I put down a cash deposit of £40,000 with a mortgage of £212,000 and apply for a help-to-buy equity loan of £168,000.When I enquired about securing a mortgage before I went down the hel