I would contact the journal directly. Editorial staff are the best people to answer a question like this. My own feeling would be that at 6,000 words your article could perhaps be slimmed down a bit…
There's an Irish story about the reporter who filed a story that was too long.
Just give me the gist of it said the sub-editor
In high dudgeon, the reporter replied Sure, 'tis all gist!
Manuscripts based on original research are limited to 6000 words of main text (i.e., not including cover page, Abstract, and references) and reviews, meta-analyses, and theoretical treatises will be limited to 8000 words of main text. Tables and figures will be limited to 5 each, regardless of manuscript type. Longer manuscripts may be considered on occasion where there is a strong and compelling rationale supported by editorial pre-approval.
Based on this instruction I do not think that the words in tables should be included in the 6000 words.