Well, you'll get the jerseys-with-pockets thing later as you're out on the bike for long rides & need to reach back to grab a snack to keep you going. You can do this on the bike safely as opposed to having to go into your under the seat bag, for which you should stop & get off your bike.

You already bought one of the best windbreaker shells on the market, so you can wear that instead of warmers over a short-sleeve jersey. It is so light & packable that you can peel it off & stuff it in your back pocket (another use for the pockets!) if it warms up. I'm not a big fan of warmers. The arm warmers slide down so I'm constantly pulling them up, & I hate all the extra grippers on the legs. Thin tights are great.

As for the shorts, you get what you pay for in that world. If you find some you like, stay with them & keep an eye open for a sale price. You'll avoid disappointment that way. And bibs can be super-comfortable because you get rid of the waistband. Just make sure they fit you right, and that the straps are not too long (they do need to stay up). And for bathroom issues, no hassle at all if you remember to wear a full-zip jersey. You peel it off like a jacket, & whiz & go!