Several websites, simple but with social integration

excellent sense of design, conversant with wix and squarespace and also wordpress.
I have 3 important 1-2 page websites I need launched in the next 2-3 weeks, with some social integration.
the plan is to go with wix or squarespace for the 2-3 week launch, then to migrate to wordpress (or I am open to your suggestions) and launch those in about 8 weeks.
I also have about 6 one-page landing pages to be launched in the next 8 weeks.
budget is flexible. work could be on going

I am looking for someone with at least 5 years experience in web production / design.