Should I consider VAT tax [uk 20%] in my subscription price?

Launching a subscription service, &hope to make over the VAT threshold eventually, so ill need to register when that is the case.Should I inflate my prices by 20% so It can cover VAT when I register?

pricing in mind is £4.99 a month. but if/when I reach the vat threshold ill need to register for VAT. This means if I keep the original pricing ill have my profits reduced by 20%.

so should I just charge £5.99, so when it does get to the time I have to pay VAT, it wont affect my profits??