As nobody seems to have chimed in, I'll jump in with some fellow newbie advise. Depending upon the type of lights you are using, it may be a bit too far but it should be fine. Watering is harder to explain and we should start with the notion that we don't water on a schedule, but rather when the tree needs the water. A moisture meter is basically useless in bonsai soil (it's made for potting soil), but a chopstick in the soil seems to work for others. I don't personally use one and just check on the soil before I go to work to see what's going on. At the risk of overstating, I'm more concerned with ensuring the trees don't dry out and less concerned that about overwatering trees in a grow tent that are actively growing under lights and in basically inorganic soil.
I guess overwiring can be a thing, but 5 wires is far from a lot. Bigger question is what is being wired and why?
Best advice I can give is take a step back from the tree and think about what your long term goals for it may be. This is a hard thing to determine when we are just getting started. Your ultimate goals for the tree will begin to dictate your next steps. Take the time to learn about your tree from hands on experience and about bonsai generally. BRT are fun and beautiful. I needlessly wrecked and killed so many trees because I didn't internalize that bonsai is really a long term project and that we develop our trees incrementally over many many years. Much better to keep the tree alive and healthy as you figure things out than to start with a whole bunch of chopping and wiring and then putting it into the garbage pile.
Some of the more basic questions I try to ask myself when starting with a new tree is (i) how tall will the tree be; (ii) what will be the ratio of trunk thickness at base to height; (ii) how much taper; (iv) what kind of movement, if any; and (v) what style am I shooting for. With some answers in mind, the journey can begin. I want to make sure my nebari is growing well from the get go and then start developing the trunk. As the trunk gets closer to my goal, I can give the branching more attention.
So much of this art is subjective preference. Some like giant trunks and will grow the trees out for long periods of time before getting started. Some want a much smaller specimen. Formal upright to informal to "S" shapes. One guy's masterpiece can elicit a response such as "is that what a tree really looks like?". Levels of refinement are also a matter of taste and goals (not to mention time). There aren't a heck of a lot of "right" answers for subjective tastes. Once we can express our subjective tastes, however, there are various "right" answers on how to move forward towards that goal.
Personally, I would like to develop really nice trees at some point. I am happy to say that after 4 years of this, I am finally realizing some of the goals I had in mind when I started bonsai - namely, enjoying the journey and my trees. And frankly, I think my trees are actually getting on a better development path because of this new mentality. Nowadays I try to make a multi-year plan for trees that I am actually working on (as opposed to growing out). Seeing a multi-year plan in front of me helps keep my urge to butcher the trees at bay.
