It's mostly about how your clients see you, especially if they are repeat clients.
SE traffic is good for new clients, but existing clients don't search for you, they try to remember your identity.
This.
The problem is that many webmasters are obsessed with SEO, but branding is a different game. A low quality, unbrandable domain can do well with SEO. But when it comes to advertising, the weaknesses like the lack of memorability etc become apparent.
Also, there is no rule that says you must choose between a brandable and a generic/keyword domains. You could get both: use the brandable domain in advertising to establish your brand and use a keyword domains for SEO purposes (could be a redirect).
Large corporations often have lots of domain names that all serve as entry points to their websites: it's called market segmentation. You don't have to use a single domain name as part of your online strategy.
If you are in Oz, I would strongly recommend that you get the matching .com.au of your .com... especially if your focus is on Australia proper.
However, I have to agree that fr8 is not a good choice of brandable domain, especially if it is meant as a substitute for freight. At best you will look cheap and amateur. You know, it's the 'l33t' speak popular in hacking circles. You'll probably lose some traffic but mainly your credibility will suffer.
Do some brain storming, write down all your ideas, the domains you like, plus the extensions, see which ones are available, which ones aren't but could be for sale and take it from there
Perhaps a keyword suggestion tool would help. Some registrars offer this service.
I also like to use sites like synonym.com for finding related/similar keywords and multiply the number of possible keyword combinations