Not sure what your balance is right now, but don't drop to 2nl if you still have $200, $200 is plenty for 5 and not far off shot-taking at 10nl lol
I'm playing 10nl atm with 24bi's, just know when you should move down and make sure you do, which is nothing to worry about for you atm as you shouldnt move down to 2nl until you ge to about $70 imo. This is all provided you have a $200 roll, which i'm not 100% sure of.
My advice would be to have a look at controlling tilt before you go any further, read the poker mindset and try to get a trial for deucescracked if you haven't already, tommy angelo has a really good series there called the eightfold path to poker enlightenment, I used to tilt like crazy and the only reason i've only made 1 deposit is because of disciplined brm, but after reading that book and listening to the series my whole mindset changed and I am now very relaxed while playing, even when the cards don't go my way.
The thing thats brought my micro game on loads has been to seriously up the amount of tables, i'm guessing people will rubbish this but its working for me so I'll put it out there incase it works for you. Your on stars, which is perfect, now get yourself tableninja, set it up to play with a stack of tables, and just keep adding them, not sure how exp you are with multi-tabling already, but for me, playing 16-24 tables of FR is exactly what I need to avoid FPS, boredom and tilt.
FPS - No chance of that happening with a stack of 24 tables, I look at my cards, look at the stats of the people already involved/soon to be possibly involved and make a decision, thats it, and when i say i look at the stats......i don't look at a billion different stats of the guy who's just opened, i just look at his vpip/pfr and make a snap decision about what i'm doing with my hand.
I think a huge leak for people at the micros is to level themselves looking at hundreds of different stats and making moves based on decisions made from a small sample of hands on a villain. The micros is about getting max value out of your good hands and losing as little as possible from the rest, people play very faceup so don't kid yourself that the CO opener who has a pfr of 23 and has now just came over the top of your 3bet from the blinds is playing some meta-game where he knows he opens wide and he knows you know this so you'll be 3betting light and he can 4bet and make you fold, so you just stick it in there with your TT b/c he's a bit aggro so he does this with any ace and loads of small pairs/sc's/junk, only to see him turn over the KK that he practically announced to the table with his 4bet. Like, just assume that all the villains are brain-dead and if they have a hand they'll let you know about it, if it looks like somebodies got it, they generally have in my experience.
Boredom - Again, no chance
Tilt - The beauty of playing this many tables stacked, is that you rarely see the outcome of a hand until you finish your session and have a look at your winners & losers, this for me practically eleminated my tilt overnight, by the time i'm raging that the fish hit his 2 outer i've closed all my tables and finished for the night anyways so no worries about spewing off the rest of my roll.
People might say your missing out on thin value b/c your not spotting as many habits, or don't have enough time to make a good decision about whether or not to make that thin valuebet on the river for an extra 20bbs off the fish, but i can show you hands where i've bet rivers with nowhere near nut hands and been paid off, all while playing 900 odd hands an hour.
This has got waaaaaaay TLDR, but as a last point, imo the most important thing for a micro player is to learn about valuebetting, micro fish's biggest leaks are that they like to call, so to make money you just make them call when they have the worst of it, ez game, learn about when there is value in betting that river card, even if its just brought an overcard to your pair and you'd normally check it back, this is where there is money to be made from fish, making like a less than half pot bet on the river and being paid by a worse hand is the best feeling ever imo and all those extra 20-30bb's really add up.
Anyways, i'm at work so have basically just been babbling here, hopefully its makes some sort of sense, and isnt too long.
Make loads of good folds