Cashier : adoption of customers from existing stripe account

I have a new laravel project using cashier with Stripe. There is an existing stripe account and legacy app with subscription customers active and paying regular amounts with three types of subscription products.

I want to move the customer base to the new Laravel app.

I see that I can pull foreach customer stripe details:

$user = Cashier::findBillable($stripeId);

and $stripeCustomer = $user->asStripeCustomer();

Then sync the default payment method from Stripe with:

$user->updateDefaultPaymentMethodFromStripe();

The customers are all billed monthly and have a normal anchor (created) date.

Does this import strategy look solid ? Have I missed anything ?

Do I just set the users subscription to monthly with the stripe start date and swap over when ready to deploy production ?

Thanks ! Tom.