Not sure if this will help, but here is a sample set up for one of my documents that usually have 15 - 20 tables which first are called from a recutils and then passed to a source block for the table. (Please note that I use the numprint package, which does not "like" any text in a number only column, so there is a separate line for the initial row. I am still playing wihtthis)

#+Begin_example

Some text here which is followed by a table

#+LATEX:
\label{SCHEDA}
\begin{center}
\textbf{SCHEDULE A\\PRINCIPAL RECEIVED}
\end{center}
\setlength{\extrarowheight}{8pt}
\vspace{-3.0ex}
\ofoot{Schedule A}

#+NAME: SCHEDAP
#+ATTR_LATEX: :mode table :environment longtable :align p{60pt}p{60pt}p{240pt}p{60pt}
|       Date | {{{cmhfill}}} Shares | Description                                              | Inventory {{{cm2space}}} Value |
#+begin_src rec :data foo.rec :type Finance :fields AccountDate,Description,AccountAmount :results silent
 (File = 'bar' && AccountSchedule = 'A')
#+end_src
#+RESULTS: SCHEDAP
#+NAME: SCHEDA
#+HEADER: :eval no
#+begin_src emacs-lisp :var table=SCHEDAP :exports results
  (setq table (cons 'hline table))
  (setq table (append table '(("|Total Schedule A"))))
  (setq table (append table '(("\n#+TBLFM: at>$>=vsum(atI$>..at>>$>);%.2f::"))))
  table
#+end_src
#+ATTR_LATEX: :mode table :environment longtable :align p{60pt}N{6}{3}p{250pt}N{8}{2}
#+RESULTS: SCHEDA

Some  more text here

#+End_example