To answer your question it all depends on your current bodyweight/muscle mass: So if we were to take someone weighing in at 80kg we would take that number and multiply it by the given numbers down below, giving you your 1 rep max for your bench, squat and shoulder press. Through this you can decide/narrow down which plate set/bundle would be best suited for you.
Person weighing 80kg
Bench 1 Rep Max = 45kg (.56 x bodyweight)
Squat 1 Rep Max = 65kg (.81 x bodyweight)
Shoulder Press 1 Rep Max = 35kg (.44 x bodyweight)
Yes the plates are available bundles/sets. Here are the available sets for purchase:
'50KG Bumper Plate Set' = 4 x10kg, 2 x5kg
'100KG Bumper Plate Set' = 2x 5kg, 2x10kg, 2x 15kg, 2x20kg
'150kg Bumper Plate Set' = 2x 5kg, 2x10kg, 2x 15kg, 2x20kg, 2x25kg
The recommended set/bundle for the person mentioned above would be the 100kg bundle, as it gives plenty of possibilities for progression and will challenge the individual.
Most Power Racks measure 7ft or a little over 80" in width, enough to accommodate a minimum 7ft bar.
In order to safely rack a bar we recommend not to use a bar shorter than this, as you won't be able to load the sleeves.
The RPMPower Olympic Bar – Black 2200mm | 20kg