That's great strategy you have, If you are planning to sell products online then i suggest you should use email automation tools, It can help you to monitor open rates, engagements and so on, apart from that if you are doing this for the first time then i suggest you to warm up your IP address its very essential. Use email verification service to clean your email list and avoid spam traps and honey pots. Avoid using spam triggering keywords,nowadays Email services provides have very strict spam filters.