I’m going to reply individually to all the messages so I don’t miss anything, so sorry if anyone gets bugged by the multiple reply’s..
With the moss green vs hi vis, if you’re moving it at a decent speed, you don’t really need the hi vis, since you’ll feel the hit almost every time if not all the time. The only time you really need to use a hi-vis would be finesse type things, when you move the bait and let it sit, such as using with worms, creatures, jerkbaits, anything you’re going to let sit for more than a second. It’s more so you can see your line moving in the water, usually left or right from where you are, indicating there is a fish on.
And I can understand about knots in the spool, one thing I’ve heard/read but haven’t tried is put straight mono on your reel (cheaper) cast as far as you can with a weight about in the middle of your rod’s lure weight rating, pull some more line out (maybe another10-30 yards), and cut your line. Since that’s as far as you can cast, you won’t really get in to the mono.
As you mentioned you might just fill straight braid, lots of people will do that, then when they want to change it, will just reel it from one spool to the next, making fresh braid where you’ll use it.
I’ve heard that not using a mono backing will make the gears work harder and the reel won’t last as long as it would normally. Even just filling it up with a couple layers of mono would do the trick. As to how much of each, there’s a lot to consider with that, I would just guess (what I do), you’ll probably put way too much braid on to begin with, but you’ll learn and be able to guess pretty spot on. You’ll want to err on the side of too much braid.
If I were you, I would just give the righty baitcasters a shot. I use(reel) baitcasters right handed and switch it to my left and spinning gear lefty. What’s awesome about baitcasters and using braid is, if a fish does hit it right when it hits the water (happens a lot) you can just put your thumb on the spool and set the hook, since it’s braid, it responds great and it doesn’t slip with decent thumb pressure, then reel, which engages it, and you’re good. It might feel weird at the start reeling the opposite way, but you’ll get used to it and it will become second nature after 1-2 days, if not sooner. A lower profile baitcaster will probably help since you usually hold the reel as opposed to rod a lot of the time. I just tried using my dad’s lefty baitcaster, and it was odd to begin with, but after 20 casts, got the hang of it quickly.
One thing I have noticed is that cheaper reels greatly increase backlashes. If I would have known this, I would have spent the extra money and got more expensive reels. I have the BPS Johnny Morris Signature and have only backlashed maybe 4 times total with it, and they’re always easy to get out, with a cheaper (abu garcia silver max) I backlashed every trip with it. Same lines, same brakes, just backlashed more.