Hello SIr,
As per the information provided by you GST will be applicable as the registration will be done post 01st July 2017 and the assume that the payment will also be made then or thereon.
Trust this clarifies your query.
Feel free to call / get back in case of further clarifications.
Thanking You.
Regards,
Rohit R Sharma
BCOM, ACA, LLB-GEN, CERT. FAFP