Best Page Structure for searchable portfolio

Hi there - very new to Squarespace and looking to build a portfolio site.

What is the best setup for a searchable, categorisable portfolio of projects. We have around 100 design projects, each of which needs a page with a few images, maybe some video, and some text.

We'd like a user to be able to search these projects by category or by tag. We'd like to have pages for each category, which display a grid of projects that match that category. We'd like to have a grid of 'featured' projects on our homepage. It seems like we should be using Collection Pages and Archive Blocks to achieve this?

I've come up against a few issues. A Portfolio page (with each project as a sub-page) seems to be the intended way to do this, and has full flexibility when designing each project page, but then you can't add Categories or Tags, and it doesn't work with archive blocks, so there's no way to search through them.

Blog pages (with each project as a blog post) seems like it would work, and has Categories and Tags, but it looks like I don't have much flexibility when editing a blog page - all three site templates I've tried only allow you to have a title and some text on a blog page, and I can't seem to add anything else (videos, photos, complex text layouts)?

Am I going about this the wrong way?

(There is only one note. You can only add up to 40 projects with the portfolio page)

Blog page is a best choice.

"I can't seem to add anything else (videos, photos, complex text layouts)?"

Can you describe in detail this? We can help easier

Thanks for the quick response. I did a bit of reserach after this and also found out that Portfolio is limited to 40 projects so not possible. Blog posts sound great.

However, on every template I've tried Blog posts are quite limited. For example, the title is always at the top, and anything you add (images, galleries) exist in the same limited-width frame below the title. The site design calls for full-bleed images, ideally above the title line. Or with the title line superimposed over an image. 

So at the moment, the blog structure doesn't have the flexibility to make the design I want - unless I can find a different template.

Are there any templates which include full-width images, or generally more flexibility within the Blog layout?