4) The more you show on the site, the more designs you have to offer = more orders.
Here I have to respectfully disagree. I actually have an article in the current edition of Australian Flower Industry magazine on the topic of the paradox of choice, citing commonly referenced scientific research that shows people are more likely to make a choice when presented with fewer options. There are experts who advocate for a selection as small as 4-6 options (in the case of a florist, that could be viewed as 4-6 categories, and 4-6 items per category). It's hard to get florists to pare down their selection that much, but the science doesn't lie. Too many choices leads to "fear of making the wrong choice / fear of loss (not making the best choice)" and fear is the #1 motivator of all human behaviour - including buying.
The trick is having the right selection. You have to curate and manage your product selection so that people will find the items they are most likely to buy, while in a presentation that is most conducive to buying.
An example of a "long tail" term would be "sympathy flowers xyz funeral home houston texas." If your site is built by a qualified web design professional who understands these type of things they will build your site to get listed in the search engines for the long tail as well as the more traditional.
Here I'm just going to get pedantic and split some hairs
@Sarah Botchick I know what you're saying, and that you understand what I'm about to say - so this is clarification for the larger audience, if that makes any sense.
A web design professional is just that - a designer. They work primarily on the presentation layer, not the content, planning, structural, or strategy. Sure, they might wear several hats - especially in a small firm - the excellent point Sarah made about using a content strategy to capture long tail traffic is not one to be addressed by the designer, but by a strategist well versed in SEO and online marketing, then executed by a content creator.
They might all be the same person, but that's rarely the case when it's done well. I'm not a good designer, though I do alright with wire frames, etc. We put together a strategy, then create the wire frames, and pass that to a designer to employ their expertise.
The only reason I bring this up at all is that in recent years SEO has become one more bullet point in the list of services of most web designers (and sadly most of those are the web version of Basement Bettys - using WordPress and something from Theme Forest, with no actual skill). A few years ago I shared an elevator ride with a guy who was just launching a new web platform for florists. He had given no thought to SEO, no plans to offer it, etc., with the possible exception of some cheap link buying. We talked a bit in that elevator ride, and within 24 hours his website was updated to announce they included "advanced SEO". No change to his service offering, but he came to realize people expected it.
Designers aren't SEOs - and vice versa. Both are important, both are necessary. Rarely are they the same person. <end of ramble>