Lately ive been considering of getting into freelancing however i do have some ?

1st. is it good to have 3 website plans what i mean is the following
- Basic Page 6 Pages with a contract form with SEO
- Business Package a CMS Edit yourself CMS Website with SEO
- Online shop store - with SEO

Not sure with these include SEO as a fix rate of says 4k if it was or a monthly bill ive looked around and found most seo resellers only do it monthly eg

So what would be the best popular plan to go with the above website packages those will also include hosting and domain registration as well

how do you know what seo package would suit what plan if i was trying to do a website design package so i can sell to design clients?