Sip or stock clariifcation

As of now I am investing in 2 sip small cap each one corresponds to amount Rs2500[Totally 5k].

I am planning to stop one sip and investing in one quality stock like asian paints,TCS etc on a monthly basis.

My investement duration is long.

Is it good or right decision to invest in one quality stock on each month at higher valuation by stopping one SIP.

My worry is these quality stocks are keep on increasing and i do not know when they will be avilable for lesser valuation