You can use unpadded tights, leggings, RonHills etc over padded shorts.
Legwarmers are best when there is a need to remove them, is temp change. If you always wear them all the time, leggings are more comfortable.
How do you pee in bibtights?
Winter base layers don't need pockets and rarely need neck zips. You can use a simple T-shirt style rather than stack more cycling jersies in layers. When you have 3 layers of back pockets, it can get uncomfortable.
If there is no rain, a simple windproof is much more comfortable and breathable than the best waterproof.
Once you have the base and shell, midlayers can be pretty simple and cheap. Thin fleece or wool jumpers and sleeveless gillets are good.
Summer shoes are tight and made of mesh. Winter footwear needs to be looser, so you can fit thicker socks, and need a more windproof upper.