Which web hosting provider is ideal for ASP.NET MVC 4 site running over SQL Server 2008 R2 database?

I am seeking for an advice to deploy my ASP.NET MVC website on a web hosting provider.

I want to deploy one site which will have following three applications:

- ExternalSite_Web: A website built upon ASP.NET MVC 4 on .NET Framework 4
- Service_WCF: A WCF service that's been consumed by ExternalSite_Web and it uses Entity Framework 5, and SQL Server 2008 R2 database.
- InternalSite_Web: A website built upon ASP.NET MVC 4 on .NET Framework 4

My questions are as follow:

1. Can I deploy all these 3 site under one domain?
2. Which web hosting provider can give me easy deployment options for publishing these range of applications.
3. Which is the best and economic web hosting provider to suit my needs with best performance to end-users?
4. At initial level I will be fine with 1 GB of space.. whereas I anticipate I will need around 5 GB of space including sql database as the site users grow.

Any advice on this much appreciated.

Thanks