Hello Adi,
Every startup in it’s initial stage when they plan to promote their startup face this problem when they wish to hire a company or a freelancer for web development company but yes budget is the biggest constraint.
If you ask me for the advice initially go for a wordpress website. Till the time you and your startup don’t have sufficient resources and savings to make a good start you should come only with the CMS wordpress as it gives a lot of functionalities in low price. Apart from side by side you can have a search of some online web development services but in that case make sure perfection demands money too. Make yourself capable enough first then move forward.