It only seems overwhelming b/c you are new, you will quickly learn how to make silver. The most common method is what was described above, simply rushing 290 3 times and saalus twice, but that is marginal $ wise and only really idea if you are managing 47 different alts like @Nicola.
For you I would suggest solo’ng the 132 to get your feet wet and then moving up to the 145. Furthermore when you are of an appropriate level you can farm many items to speed up the process, I will give you examples;
Barha Forest - royal guard greaves recipe 500-700k, royal guard gloves recipe 100-150k, superior greytis and korvos greaves recipes 500k+ varies
Sentry Bailey - socket horns 500k+ varies
Viltis Forest - Rapid Bangle recipe > Mage Tower 3F - Hunter Bangle recipe, combine both to craft a rapid bangle and sell that for 2-3million
Those are just a few examples, as I said, you will catch on once you play some more and learn the maps etc.