I'm not the best at fish suggestions so I'll leave that to others.
When you finish your fishless cycle and do the big water change the filters are usually not overly dirty because there haven't been fish in there. Of course you record the event in your logbook and it marks the beginning for your maintenance schedules. The two most fundamental habits to establish are the weekly water change and the monthly filter clean. These things are not set in stone but these habits are a really great way to get started for the first year and I recommend them to all beginners. Try as hard as possible to perform the weekly gravel clean water change, changing anywhere from 25% to 60% depending perhaps on whether you feel your tap water parameters help you. In many cases the tap water will help those with soft/acid water, so those people usually like to change larger amounts to help maintain their KH.
The filter clean is another essential element of maintenance. If the flow of a filter ever slows visibly, then its time to clean it. Otherwise, if you see nothing wrong then one month is a good starting habit as said. Perform the first cleaning one month after the big water change. Use a coarse sponge to clean all the interior tank walls, whether you see algae or not. Perform the gravel clean, removing water and saving at least a bucket of tank water for the filter clean. Remove and clean any decorations as desired. Unplug the filter and shut off the cutoff valves or otherwise follow its instructions. Remove the filter to the tub or wash sink. Gently open the filter as needed and clean the media: dunk any trays of ceramics or bioballs in tank water. Dunk and swish several times. Firmly but not excessively squeeze any sponges in the tank water. Follow instructions to clean your impeller and impeller well. Gently remove any o-ring seals and take the time to completely coat them in the vasoline-like lubricant your manufacturer supplies, or use plain vasoline itself. Making this a habit at each cleaning will help your o-rings to last forever, rather than oxidizing and breaking. Carefully reassemble the filter, taking care not to twist or pinch any of the o-ring seals. If its an external cannister, reattach the hoses and open the shutoffs, then walk away allowing a long, long time to be sure the filter box fully fills with tank water. When its totally full, come back and plug in the pump, manually priming if necessary. When all is running correctly, gently lift the filter box from its safety water catch and tilt it 45 degrees in all directions, giving a gentle vibration movement at each angle. Each time this frees some air bubbles, give it time to recover before you loose too many, otherwise it will cavitate and require re-priming. For internal filters, you can shake them underwater to acheive the same thing and HOBs hardly need any of this. Top up your tank and adjust your spraybar to the desired level of surface disturbance.
Make sure you re-dose any plant fertilizers after you re-scape your substrate and decorations. In the months following fishless cycling, make note of your nitrate(NO3) readings and see whether your monthly filter cleans help you to maintain NO3 at between 5 and 20ppm above whatever NO3 level your tap water has. If your fish-load/filter combination is such that this seems hard to acheive then you may need filter cleans that are more frequent than monthly, or you may even eventually need more filtration or fish re-homing. Even on large external cannister filters that could go for 6 weeks or several months between cleanings, I feel that its better to adopt the monthly habit if possible. It tends to avoid excess mulm buildup and keeps you away from other buildup problems. Obviously smaller filters may need more frequent cleanings, perhaps every other week. While ceramics and good sponges can last a lifetime, all filters benefit from more frequent replacement of whatever polyfloss or other fine mechanical filtration media is present. It varies when this is needed.
~~waterdrop~~