It's probable that what you've used for trout will work as well for those bass unless you've been using tiny flies & very fine tippets. I like a leader & tippet to be about my rod length, so, somewhere between 7 1/2' to 9' and adjust the tippet length & breaking strength or stiffness to the flies. As denver1911 indicated, heavier flies, need heavier tippet and bass aren't often line shy.
I stopped even considering "X" ratings for my tippets many years ago since most of the fishing I do is for bass or salt species, and just go with bulk line for tippet & anywhere from 6 lb test up to 30 lb depending on what rod I'm using & my target species.
Your rod will limit the size of the flies, so stay within the limitations of the rod & your casting abilities & you should be fine.
As far as the flies, bass will eat most anything & there are many very good fly patterns today. I like to try flies of a size & pattern that may imitate something in the waters I'm fishing, but that often will be a generic pattern. For example, if there are Shad, then a baitfish pattern with olive or grey backs & whitish belly will usually get bit. same with crayfish, or any other possible forage. They don't usually need to be precise imitations, and size or profile may be more important than the actual pattern
Also, don't over look flies that may not be specifically for bass. I like Intruders in streams for SM bass, and LM bass will eat them too. Same with MOAL flies. I tie them without the trailing hook used for Steelhead, and just go with the single hook, but tube fly versions will work also. IMO, bass tend not to strike short the way the trouts will and those trailer hooks tend to result in gut hooked bass. It's just a matter of adopting the pattern to a different hook configuration.
If you select some flies to cover the forage & the water column, that's a great place to get started, then add whatever you feel is a better choice as you get to know the waters better. That may mean you'll end up using crayfish pattern more than baitfish, just as an example, but the opposite could be true. In some small waters I've fished, insects made up more of the diet than anything else. Go with what the fish & the waters tell you. You can learn a great deal from the stomach contents of most any fish too.
I use many flies, styles & patterns for bass, and always have some "natural" colors or patterns, some light & dark, and some attractor patterns. They all have their place. :wink: