Hey all,
When deciding amounst top contenders in a race as decided by ratings, say i've narrowed it down to top four chances (or so i think) would factors such as previous track, track and distance and track condition in relation to form be a major determining factor in ranking one selection above all others? If so how heavily should i weight these factors?

For example,
One of my four selections has previous track and distance ability (win or place) but also demonstrates form in relation to the prevailing track conditions. Therefore assuming all other criteria are met, how accurate would my selection be if i used this criteria for determining the final selection?Any stats available

I apoligize in advance if this seems a little simple to y'all but as a learner who has yet to spend large amounts of money on a system tester and with limited knowledge to this point i am reliant on the experience otf others.

Thanks