Can it be written entirely by myself (never got legal training) following the examples of my competitors? If not, is it worth writing it myself and then asking a lawyer to review?
Just with respect to the privacy policy, ask yourself these questions;
1) Will I share personal information with 3rd parties for marketing or other unrelated purposes to why they shared their info with my company?
2) Will I share non-personal information (eg; de-identified or ad tracking) with 3rd parties for marketing or other unrelated purposes to why they shared their info with my company?
3) Is there anything about my products or services that might creep out my customers. (Eg; App with location-based tracking in the background)
If you answered yes to any of the above, talk to someone who can help you get some clarity. If not, then use some standard language from Snapterms or other public-reference sites as a guide, but do not simply copy a competitors or related site privacy policy. You can do this yourself, but every policy requires some customization to make it relevant for your purposes.