I want to create a table like this:

Here is the code:
\begin{table}[h] \begin{threeparttable} \caption{\textit{Sample Selection}} \centering \begin{tabular}{lcccccccc} \toprule\toprule & (I) & (II) & (III) & (IV) & (V) & (VI) & (VII) & (VIII) \\ Variables & ADA Model & GCONCERN Model & MEET Model & LOGFEES Model & ADA Model & GCONCERN Model & MEET Model & LOGFEES Model\\\midrule NLEAD & 0.000& -0.037& 0.0301& 0.006&&&& \\ & (0.15) & (-0.16) & (0.35) & (0.36) &&&& \\ CLEAD &&&& 0.000 &-0.038 & -0.098 & 0.020 \\ &&&& (0.22) & (-0.21) & (-0.92) & (1.43) \\ Observations & 75,188 & 6,077 & 11,165 & 24,279 & 23,306 & 3,856 & 5,632 & 16,388\\ Adjusted $R^2$ & 0.045 & 0.149 & 0.026 & 0.694 & 0.041 & 0.155 & 0.027 & 0.711\\ \bottomrule \end{tabular} \begin{tablenotes} \small \item This is where authors provide additional information about the data, including whatever notes are needed. \end{tablenotes} \end{threeparttable} \end{table} I am using booktabs & caption package. Some of the issues which I am facing goes below:
- Even though I am getting bold Table 7, but it's not capitalized and not on a separate line
- I have lot of spaces in my table and hence can't see the full table in the output. How do I reduce the spacing between columns?
- I am getting space between caption and toprule and note and bottomrule. How can redefine the space distance. I know I can use vspace, but I want to redefine the space option. Thanks.

booktabswithlongtable; they don't exclude each other. For the format of the caption the use thecaptionpackage may help