This is absolutely not advisable. You need a fully functional website. You get no credit for building your website by yourself. It makes more sense in getting it developed by a professional development company. You should be mindful of a few important things before launching your website.
The user interface on your website should be convenient and user-friendly for everyone using your services. It should be easy for people who are not familiar with computers.
Improving your web application security is extremely important. All Commerce websites should mandatorily undergo a security evaluation process.