In your opinion of SEO, would it be wise to work on a website and create 100 pages of items and then launch it? OR Is it better to have a plan about your 100 pages and then each day add a new one? 100 is a random number, Let's imagine 30 and do it for a month. What do you guys think?
I will go for number 2. Then on your front page add the update link there or content. If the bot see your page steady update each time they visit, they will know you have a fresh content for them. Front page will the index the most by bot and also have the highest PR among other pages.
first launch the main important pages which have more informative about your services then add others according to the visibality in SERP's.